IRB-RET2 RetroReflective Photoeye

Wiring Instructions: Follow the below table to identify the correct wiring diagram for your gate operator. Wiring diagrams are found in your EMX product manual. It will show the necessary wiring, dipswitch settings, and jumper settings. Check with your gate operator manual to make sure you are using the correct monitoring method associated with the diagram below. Updated as of 3/4/2025

Caution: * Using two wire pulse incorrectly can damage your device. Be advised to check your operator manual for proper wiring of your device.

Note: ** HySecurity gate operators using the SmartCNX Controller require 10K Resistive (Diagram B) or 4 Wire Pulse (Diagram F).

Non-Monitored Setup: Follow diagram B, but the dipswitch SW2 position 1 should be off.

Sensitivity Adjustment: Set sensitivity to maximum by turning it clockwise until it stops. When the device aligns, turn the sensitivity back down as much as possible while the red light is still on solid.

DIP Switch Settings: Make sure the dipswitches at SW2 position 3 and 4 are fully on.

Transmitter Check: To make sure the transmitter is sending signal, look into the transmitter lens with your phone camera. You should see a crescent or circle of violet colored light.

DIP Switches: On the second set of dip switches labeled SW2, make sure switches 3 and 4 are in the on position. Those switches redirect power and only need to be in the off position for wiring Diagram C.

Check Power: Verify input power is between 6–40 VDC or 12–24 VAC with a multimeter.

Monitoring Method Configuration: Make sure that the device is configured for the correct monitoring method for your gate operator. This can be found in your operator manual. Also common methods for various operators can be found in the above table under question, “How do I wire this device to my operator?” Then follow the corresponding diagram (A–F) found in the IRB-RET2 manual.

Additional Reflection: Check area for highly reflective surfaces such as a shiny vehicle that may be sending the signal back to the receiver. Also wet ground may allow the signal to reflect under the vehicle. Try turning the sensitivity down, counterclockwise, until the device stops receiving a signal while an obstruction is present.

Reflector Maintenance: Apply a hydrophobic solution to the reflector. Like Rain-X: Plastic or a similar solution.

Power Cycle: Remove power from the device for 15 seconds and then return power to it.

Jumper Position: Make sure the JP1 jumper is set to 2W for two wire pulse. For all other monitoring methods leave the jumper at 4W.

Dipswitch Settings: Make sure SW1 positions 1 and 2 are fully in the off position. These dip switches are only used to set 2 and 4 wire pulse modes which do not use the relay and so there will be no click when the beam is broken. If you meant to use these settings, then it is ok that the relay does not click.

Signal Issue: The IRB-RET2 is receiving a poor signal.

Adjust Alignment: The reflector may not be in the center of the infrared cone coming from the transmitter. To get the reflector to the center, hold the reflector in front of the IRB-RET2 at least 5 feet away. Then move the reflector in a circular motion to find the outer edges of the infrared cone where the red light begins flashing or turns off. Make sure the reflector is aligned at the center of this cone on installation.

Low Sensitivity: The sensitivity may be too low for the given distance. Increase the sensitivity by turning the dial clockwise until the red light goes on solid.