Our Products
- Transponder Safety Switches
- Inductive Safety Switches
- SICK Safety Laser Scanners
- Electro Mechanical Safety Switches
- Safety Command Devices
- Measuring Automation Light Grids
- OPTO Electronic Protective Devices
- Safety Camera Systems
- Safety Light Curtains
- Multiple Light Beam Safety Devices
- Single Beam Photoelectric Safety Switch
- Magnetic Safety Switches
- Safety Controllers
- Safety Relays
Safety Devices
Safety first - efficient solutions for industrial protection

Non-contact safety switches with high level of prevention against tampering:
Transponder safety switches are used in applications where a high level of prevention against tampering is essential. The safety switch determines which actuator code to use and will not engage unless the proper actuator code is read. The safety switches have a wide response range, which is highly beneficial for mounting and considerably reduces machine downtime. Some safety switches are extremely small and have a central evaluation unit in the control cabinet, while others have an integrated evaluation unit with an LED status indicator. Various versions, including multicoded and unique coded variants, enable connectivity of up to 30 safety switches.
a) TR4 Direct:
Non-contact safety switches with high level of prevention against tampering:
- Response range of up to 25 mm.
- Multicoded and unique coded sensors up to enclosure rating IP 69K.
- Up to performance level PL e (EN ISO 13849).
- Two OSSD safety outputs for direct connection of sensors to a single safety controller.
Non-contact safety switches with high level of prevention against tampering
- Multicoded and unique coded sensors.
- Response range of up to 19 mm.
- Safe series connection of up to 20 sensors possible.
- Two OSSD safety outputs for direct connection of sensors to a single safety controller.
Non-contact safety switches with high level of prevention against tampering:
- Small sensors with external evaluation unit.
- Response range of up to 10 mm.
- Sensors with plug connector or connected cable.
Non-contact safety switches with high level of prevention against tampering:
- Small sensors with external evaluation unit.
- Connection of up to four sensors to a single evaluation unit.
- Response range of up to 32 mm.
- Sensors with plug connector or connected cable.
- Up to performance level PL e / Cat. 4 (EN ISO 13849).
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Inductive safety switches are used for determining position and work on a non-contact basis. They detect approaching objects without a separate actuator. Their wide response range makes them simple to mount and adjust.
a) IN4000 standard:
Safe, non-contact position monitoring:
- One pulsed output for direct connection of sensors to a single safety controller.
- IP 67 or IP 69K enclosure rating.
- Response range of up to 15 mm.
- LED status indicator.
- Up to performance level PL e / Cat. 4 (EN ISO 13849).
- Safe series connection of sensors possible.
b) IN3000 Direct:
Safe, non-contact position monitoring:
- Response range of up to 15 mm.
- LED status indicator.
- Up to performance level PL d (EN ISO 13849), SILCL2 (EN 62061), SIL2 (IEC 61508).
- Flexi Loop-compatible M12 plug connector.
Safe, non-contact position monitoring:
- Two OSSD safety outputs for direct connection of sensors to a single safety controller.
- Response range of up to 20 mm.
- LED status indicator.
- Up to performance level PL e / Cat. 4 (EN ISO 13849).
- Flexi Loop-compatible M12 plug connector.
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SICK uses its vast to create safety laser scanners with maximum performance. Whether mobile or stationary, for area protection or access protection - our comprehensive portfolio offers the right cost-effective package for every requirement and task. Like optical radar, the compact systems scan their surroundings and measure distances by using the time-of-flight principle of measurement. The integrated rotating mirror creates a two-dimensional scan for freely defined protection areas.
a) S3000 Safety Laser Scanners:
High-performance, rugged and reliable in all applications:
- Modular design.
- 4 m, 5.5 m or 7 m protective field range.
- Up to 21 switchable field sets (21 protective fields, 42 warning fields).
- EFI interface for safe SICK device communication.
- Selectable resolution for hand, leg or body detection.
- Configuration memory integrated in the system plug.
- Direct integration in PROFINET IO safe bus system.
- Simultaneous monitoring of up to four protective fields.
b) S300 Safety Laser Scanners:
Compact, efficient and flexible:
- Compact design.
- 2 m or 3 m protective field range.
- 270° scan angle.
- Up to 16 switchable field sets (16 protective fields, 32 warning fields).
- EFI interface for safe SICK device communication.
- Selectable resolution for hand, leg or body detection.
- Configuration memory integrated in the system plug.
- Incremental encoder inputs for speed-dependent field switching.
c) S300 Mini Safety Laser Scanners:
Maximum safety in mini format:
- Very compact design.
- 1 m, 2 m or 3 m protective field range.
- 270° scan angle.
- Up to 16 switchable field sets (16 protective fields, 32 warning fields).
- EFI interface for safe SICK device communication.
- Selectable resolution for hand, leg or body detection.
- Contour as reference for vertical applications.
- Easy-to-configure fields and functions.
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a) Safety Switches with separate actuator:
Safety switches with a separate actuator are made up of two parts: a safety switch that is mounted on the fixed part and an actuator that is mounted on the mobile part of the guard. When the guard is closed, the actuator is moved into the safety switch. This achieves the safe status and the safety-relevant contacts are closed. These devices are ideal for protecting sliding and rotating doors, as well as removable protective covers. SICK offers variants with different shapes and functions – from compact to standard - for corresponding applications.
b) Safety Locking Devices:
Safety locking devices are used for keeping guards safely locked until a hazardous area can be entered. They are intended for applications in which there is an immediate danger to people when delayed stopping or an uncontrolled process interruption has the potential to cause injury or death. There are two restraint types, including spring force locking and magnetic force locking. With spring force locking, the guard is held closed by spring force. In magnetic force locking, the guard is held closed by activation of the magnetic coil.
c) Safety Position Switches:
Safety position switches are used for reliably identifying dangerous movements, even at high speeds. These switches use an actuator that is in a positive connection with the safety switch. There are two different actuators: the roller plunger for determining exact positions and the turning lever for identifying rapid movements. The safety position switch is actuated directly by the protective device.
d) Safety Hinge Switches:
Safety hinge switches are used for monitoring rotatable protective devices, e.g., swiveling gate and hinged doors. The hollow or solid shaft of the safety hinge switch forms a fixed and positive connection between the safety switch and the door hinge. These safety switches offer high level of prevention against tampering.
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SICK safety command devices - ideal solutions for stop and start:
a) Emergency Stop Pushbuttons:
Emergency stop pushbuttons are essential in automated machines and plants. They make it possible for someone to stop a machine or a system immediately in case of an emergency. Depending on the variant, the emergency stop pushbuttons are either integrated into a machine control panel, or mounted with their housings directly on the machines.
b) Reset Pushbuttons:
Reset pushbuttons are used when the protective device initiates a stop function. In some cases, people might be in the hazardous area without being detected by the protective device. Before restarting the machine, the protective device must be reset. The reset pushbutton must be placed near the hazardous area so that personnel can ensure the area is clear prior to pushing the reset button.
c) Rope Pull Switches:
Rope pull switches ensure that dangerous movements are reliably stopped over long distances. The rope is connected to the rope pull switch for optimum safeguarding of hazardous points that are not protected by safety covers, e.g., conveyors. In the working position, the rope is under tension and the safety-relevant contacts – the positive opening normally closed contacts – are closed. The contacts are opened by a pull on the rope or if the rope breaks, the emergency stop function is triggered. Actuation is possible at any point along the rope.
d) Enabling Switches:
Enabling switches ensure that even critical machine functions are performed safely. They are used when work has to be performed in the hazardous area in "setup" operating mode. All enabling switches are configured as 3-stage switches, i.e., movements can only be activated in the middle position because this is the only position in which all contacts are closed.
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a) MLG Standard:
For switching applications.
- Up to 3 x PNP or NPN switching outputs.
- Resolutions of 10 / 20 / 30 / 50 mm and customer-specific resolutions.
- Working range up to 8.5 m.
- Detection heights of over 3 m and up to 240 beams possible.
b) MLG Programmable:
For customized solutions.
- Resolutions of 10 / 20 / 30 / 50 mm and customer-specific resolutions.
- Working range up to 8.5 m.
- Detection heights of over 3 m and up to 240 beams possible.
- Short response time < 3 ms.
- External teach-in for optimal sensitivity settings.
c) MLG PROFIBUS:
For easy integration.
- Integrated PROFIBUS interface.
- Resolutions of 10 / 20 / 30 / 50 mm and customer-specific resolutions.
- Working range up to 8.5 m.
- Detection heights of over 3 m and up to 240 beams possible.
d) MLG CANopen:
For fast integration.
- Integrated CANopen interface.
- Resolutions of 10 / 20 / 30 / 50 mm and customer-specific resolutions.
- Working range up to 8.5 m.
- Detection heights of over 3 m and up to 240 beams possible.
e) MLG Analog Output:
Easy measuring with analog outputs.
- Two analog outputs: voltage to current.
- Resolutions of 10 / 20 / 30 / 50 mm and customer-specific resolutions.
- Working range up to 8.5 m.
- Detection heights of over 3 m and up to 240 beams possible.
- Software tools, such as height measurement, zoning, hole detection, and presence control make implementation of complex solutions achievable.
f) MLG-2 Prime:
Configure measurement tasks with ease via the display.
- High-resolution light grid: Available with beam separation of 5 mm, 10 mm, 25 mm, and 50 mm.
- Available with three push-pull switching outputs or two analog outputs.
- Display configuration with selected, pre-programmed measuring functions.
- Monitoring height up to 3.2 m.
- Operating range up to 8.5 m.
- Optical synchronization of sender and receiver.
g) MLG-2 Pro:
Maximum performance in terms of response time, resolution, and object detection.
- High-resolution light grid: Available with beam separation of 2.5 mm (coming soon), 5 mm, 10 mm, 25 mm, and 50 mm.
- “High-speed scan” function with triple scanning speed.
- “Transparent mode” function for detecting transparent materials.
- Switchable to high-resolution evaluation.
- Data compression: Run length coding.
Reliable measurement even in sunlight.
- Up to 6 x PNP or NPN switching outputs and two switching inputs.
- Resolutions of 10 / 20 / 30 / 50 mm and customer-specific resolutions.
- Working range up to 5 m.
- Detection heights of over 3 m and up to 150 beams possible.
- Short response time < 3 ms.
- External teach-in for optimal sensitivity settings.
- Highest immunity to sunlight.
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OPTO Electronic Protective Devices
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Opto-electronic protective devices from SICK are the first choice for maximum machine and system productivity. Unlike fences and doors, they do not disrupt handling or material transport and allow a better view into the machine room. SICK's comprehensive portfolio is ideal for hazardous point protection, access protection, and hazardous area protection. The SICK’s proprietary interface, EFI, offers additional process optimization.
Safety Laser Scanners:
Safety Light Curtains:
Flexible, cost-saving installation and maintenance with the highest safety:
Safety camera systems:
Quick and easy protection for hazardous points and hazardous areas:
Multiple light beam safety devices:
Economical, efficient multiple light beam safety devices:
Single-beam photoelectric safety switches:
Photoelectric safety switches for use in extreme application conditions:
Mirror and device columns:
Stand-alone mounting solution for access protection:
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Quick and easy protection for hazardous points and hazardous areas:
Safety camera systems from SICK are electro-sensitive protective devices based on image processing technology. The sender and receiver are integrated into a single housing unit. The compact camera systems do not require any additional software, and can be commissioned at the push of a button.
The automatic alignment allows a high level of flexibility when defining the protective field, and the high degree of freedom in the machine design provides maximum ergonomics.
a) V300 WorkStation Extended:
Perfect protection with minimal space requirements:
- SIL2 (IEC 61508, EN 62061) and PL d (EN ISO 13849).
- Protective field size from 0.4 m x 0.4 m to 1.5 m x 1.5 m.
- Resolution 20 mm, 24 mm, and 34 mm.
- One device only: integrated sender and receiver.
- Intuitive one-button operation.
- Automatic alignment.
- Synchronization of 2 systems.
- Restart/Reset, EDM integrated.
b) V200 Workstation Extended:
Perfect protection with minimal space requirements:
- SIL1 (IEC 61508, EN 62061) and PL c (EN ISO 13849).
- Protective field size from 0.4 m x 0.4 m to 1.5 m x 1.5 m.
- Resolution 20 mm, 24 mm, and 34 mm.
- One device only: integrated sender and receiver.
- Intuitive one-button operation.
- Automatic alignment.
- Synchronization of 2 systems.
- Restart/Reset, EDM integrated.
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Flexible, cost-saving installation and maintenance with the highest safety:
Safety light curtains reliably and cost-effectively protect against access into hazardous points and areas. Depending on the variant, different machine functions are integrated or can be selected via safe control solutions. The range from small and compact types to extremely robust and resistant variants that withstand special ambient conditions up to the highest safety level.
The smallest light curtain with the highest protection level :
- Type 4 (IEC 61496), SIL3 (IEC 61508), PL e (EN ISO 13849).
- Compact cross section (15 x 32 mm) with no dead zones.
- Cascadable twin stick design – sender and receiver in a single housing.
- Customized protective field heights in 60-mm increments from 120 to 1200 mm.
- Typical scanning ranges 0 ... 5 m.
- Intelligent, software-free configuration of external device monitoring (EDM) and reset function (RES).
- M12, 5-pin device connection.
Compact design, Efficient integration. Quick installation. Simply safe:
- Type 4 (IEC 61496), SIL3 (IEC 61508), PL e (EN ISO 13849).
- Absence of blind zones.
- Resolution of 14 mm or 30 mm.
- Protective field height of 300 mm to 2.100 mm.
- Automatic calibration on the protective field width up to 10 m range.
Small and compact, cost-effective and convenient:
- Type 4 (IEC 61496), PL e (EN ISO 13849).
- Small, compact design.
- 7-segment display.
- External device monitoring (EDM) and restart interlock (RES).
- Operating temperature range from –30 °C ... +55 °C.
- Standardized M12 connectivity.
Robust design with basic functions:
Quick and convenient, easy-to-service and user friendly:
- Type 4 (IEC 61496), PL e (EN ISO 13849).
- 7-segment display.
- Impact and scratch-resistant front screen.
- External device monitoring (EDM).
- Extremely high electromagnetic immunity.
- Extensive range of mounting accessories.
Robust design with complete function spectrum:
Large scanning range for greater flexibility:
- Type 4 (IEC 61496), PL e (EN ISO 13849).
- Various options for blanking objects: fixed, floating, or teach-in.
- 7-segment display.
- PSDI mode with the UE402 switching amplifier.
- External device monitoring (EDM) and restart interlock (RES).
- Beam coding for correct system allocation.
Solutions for special ambient conditions:
Safety in explosive environments:
- ATEX for gas: II 2 G Ex d IIB T6 Gb.
- ATEX for dust: II 2 D Ex tb IIIC T56°C Db.
- NFPA 70/NEC 500 Class I, Div. 1, Groups C and D.
- NFPA 70/NEC 500 Class II, Div. 1, Groups E, F and G.
- NFPA 70/NEC 500 Class III, Div. 1.
- Available in protective field heights of 600 mm, 900 mm, 1,200 mm and 1,500 mm.
- Resolution of 30 mm.
- Scanning range of 8 m.
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Economical, efficient multiple light beam safety devices:
Multiple light beam safety devices are electro-sensitive protective devices with two or more light beams. If one or more of the light beams is interrupted, a deactivation signal is sent to the machine so that any dangerous state on a machine or system can be stopped. A system consists of a sender and a receiver. In active/passive systems, the sender and receiver are located in a housing unit while a deflection unit on the passive side provides beam deflection.
a) M4000 Standard and M4000 Standard A/P:
High efficient solutions with maximum availability:
- Type 4 (IEC 61496), PL e (EN ISO 13849).
- Robust housing with three mounting grooves.
- 7-segment display .
- Wide scanning range, up to 70 m.
- External device monitoring (EDM), restart interlock (RES) and application diagnostic output (ADO).
b) M4000 Area:
Large scanning ranges protect hazardous areas:
- Type 4 (IEC 61496), PL e (EN ISO 13849).
- Robust housing with three mounting grooves.
- 7-segment display.
- Resolution 60/80 mm, wide scanning range, up to 70 m.
c) M2000 Standard and M2000 RES/EDM:
Integrated RES and EDM functions for enhanced access protection:
- Type 2 (IEC 61496), PL d (EN ISO 13849).
- Robust, industrial housing.
- 7-segment display.
- Wide scanning range, up to 70 m.
d) M2000 Cascadable:
Flexible integration with cascadable safety solutions:
- Type 2 (IEC 61496), PL d (EN ISO 13849).
- Robust, industrial housing.
- 7-segment display.
- Scanning range up to 25 m.
- External device monitoring (EDM) and internal self-testing (configurable without PC).
e) M2000 Standard A/P and M2000 RES/EDM A/P:
Intelligent wiring and integrated functions for economical solutions:
- Type 2 (IEC 61496), PL d (EN ISO 13849).
- Robust, industrial housing.
- 7-segment display.
- Scanning range up to 6 m.
- External device monitoring (EDM), restart interlock (RES), and internal self-testing configurable without PC.
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Photoelectric safety switches for use in extreme application conditions:
Single-beam photoelectric safety switches from SICK offer maximum safety performance. They comprise self-testing senders and receivers or testable senders and receivers combined with an evaluation unit. They have long ranges and come in a variety of types and sizes. They comply with Type 2 and/or Type 4 in acc. with EN 61496, and PL c and/or PL e in acc. with EN ISO 13849. Applications include robots, processing machinery, machining centers, palletizers, high-bay warehouses and transfer lines.
a) L4000 Systems:
Complete system that is highly reliable and offers fast response times:
- Type 4 (IEC 61496), PL e (EN ISO 13849), only in conjunction with UE401.
- Small M18 sensors with ranges up to 10 m.
- Compact M30 sensors with ranges up to 60 m.
- Enclosure rating IP 67.
- Temperature range from –20 °C ... +55 °C .
- Narrow evaluation device (22.5 mm) with external device monitoring and restart interlock (EDM/RES).
- Fast response time of max. 30 ms.
- Up to 8 sensors can be cascaded.
Universal use up to type 4, with safe control solutions from SICK:
- Type 4 (IEC 61496), PL e (EN ISO 13849), only in conjunction with suitable testing device, e.g., Flexi Classic, DeviceNet Safety.
- Small M18 sensors with ranges up to 10 m.
- Compact M30 sensors with ranges up to 60 m.
- Enclosure rating IP 67.
- Temperature range from –40 °C ... +55 °C.
c) L21:
Cylindrical design for safety applications up to type 2:
- Type 2 (IEC 61496), PL c (EN ISO 13849), only in conjunction suitable testing device, e.g., Flexi Classic, DeviceNet Safety.
- Small M18 sensors with ranges up to 10 m.
- Compact M30 sensors with ranges up to 60 m.
- Enclosure rating IP 67.
- Temperature range from –40 °C ... +55 °C.
- Metal and plastic version.
- Radial optics (90° deflector mirror).
- Straightforward diagnostics and service.
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Simple and established non-contact door monitoring:
Magnetic safety switches are equipped with complementary-switching or equivalent-switching contacts that use coded magnetic actuators. Magnetic safety switches can be used in areas where a high level of contamination occurs. The devices are easy to clean, making them suitable for contaminated areas or environments with strict hygiene standards. Their operating principle enables greater tolerances, making them ideal for applications where precise guidance of guards is difficult.
a) RE1:
Simple and established non-contact door monitoring:
- Response range of up to 7 mm.
- 1 NO/1 NC or 2 NO contacts.
- Up to performance level PL e / Cat. 4 (EN ISO 13849).
- Sensors with plug connector or connected cable.
- Flexi Loop-compatible M12 plug connector (depending on variant).
Simple and established non-contact door monitoring:
- Response range of up to 9 mm.
- 1 NO/1 NC, 2 NO contacts or 3 NO contacts.
- Up to performance level PL e / Cat. 4 (EN ISO 13849).
- Sensors with plug connector or connected cable.
- LED status indicator (RE27).
- Flexi Loop-compatible M12 plug connector (depending on variant).
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SICK's safety controllers provide a simple, flexible, and scalable solution to realize an intelligent machine design. Flexi safety controllers feature a modular hardware platform without the use of complex software. They are simple to operate and can be easily integrated with all safety control components. Their compact design makes these safety controllers ideal for a variety of applications.
a) Flexi Soft:
The software-programmable safety controller:
- Expansion modules, Motion Control modules, and gateways for all common fieldbuses.
- Configuration data stored in the system plug.
- Safe networking of up to 32 Flexi Soft stations.
- Integration of sensor cascade.
- Multi-language, license-free configuration software: exceptionally simple operation, plausibility check, simulation mode, wiring diagram, parts list, documentation, and data recorder.
Efficient and easy-to-use safety controller:
- Rotary DIP switch for easy adjustment.
- Modularly expandable.
- Direct wiring for all types of sensors.
- Logic functions: AND, OR, Muting, Bypass, Reset, EDM.
- Integration into all common fieldbuses.
- Integration of the safe sensor cascade Flexi Loop.
- Special muting modules are able to meet all the requirements of a demanding muting application.
c) Flexi Soft Drive Monitor:
Flexible, high-performance drive monitoring:
- 7 drive safety functions: SS1, SS2, SOS, SSM, SLS, SDI, and SBC.
- For all common encoder interfaces.
- Programmable logic.
- Monitoring of up to 10 speed levels and 4 brake ramps.
- Possible to monitor multiple axes.
Optimal safety protection in maintenance mode:
- Zero-speed and drive monitoring.
- 4 safe semiconductor outputs.
- PL e (EN ISO 13849), SIL3 (IEC 61508), SILCL3 (EN 62061).
- Maximum input frequency of 2 kHz.
- Adjustable monitoring limit/monitoring frequency from 0.1 to 9.9 Hz or 0.5 to 99 Hz.
e) Standstill Monitor MOC3ZA:
Standstill monitoring without additional sensors:
- Standstill monitoring by means of residual voltage measurement.
- 3 normally open and 1 normally closed positively guided safety contacts.
- 2 application diagnostic outputs for semiconductors.
- 1 application diagnostic output normally open.
- PL e (EN ISO 13849), SIL3 (IEC 61508), SILCL 3 (EN 62061).
- Maximum motor supply voltage 690 V.
- Adjustable voltage threshold and standstill period.
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Safety Relays
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The adequate solution for every application:
SICK’s wide range of safety solutions - from single-channel emergency stop pushbuttons to safety laser scanners with PNP outputs - can be connected using SICK safety relays. Safety relays are ideal for flexible, cost-effective machine integration. With SICK’s broad safety portfolio, you’ll find a solution for nearly any application.
a) Output Expansion Modules for OSSDs:
Protection of opto-electronic protective devices:
- Ideal for applications with opto-electronic protective devices and safety controllers with OSSD outputs.
- Fast response time.
- Compact design.
- Feedback path for external device monitoring (EDM).
- Screw-type terminals or plug-in screw-type terminals.
- Coded plugs for all slots.
Optimal monitoring of mechanical sensors:
- Ideal for the connection of emergency stop pushbuttons and safety switches.
- Manual or automatic reset.
- External device monitoring (EDM).
- Coded plugs for all slots.
- Variants with cross circuit detection and sequence monitoring for dual-channel actuation.
c) Evaluation Units for Safety Sensors:
The comprehensive solution for all common safety applications:
- Ideal for the evaluation of emergency stop pushbuttons, safety switches, safety light curtains, safety laser scanners and safety pressure sensitive mats.
- Cross circuit detection and sequence monitoring for dual-channel actuation.
- Manual or automatic reset.
- External device monitoring (EDM).
- Coded plugs for all slots.
Universal expansion modules for safety relays:
- Contact expansions enable four additional safety outputs for evaluation units in the safety relays product family group.
- Feedback path for external device monitoring (EDM).
- Coded plugs for all slots.
- Variant with pre-set time delay.
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