The Allen-Bradley 22DJ3-4000 photoelectric sensor is a Series 4000 LED plug-in control function module. It is designed to work with either the Series 3000 universal control base or Series 4000 LED control base. It is used for all-purpose control applications such as monitoring, positioning, stopping, inspection, detection, counting, sorting, and starting applications. The photoelectric sensor has the light receiver and light source on the same side to enable it to function in a proximity mode. The proximity mode allows things like material levels or objects to be sensed by bouncing the beams of light straight off the material. Additionally, the LED infrared sensing feature enables the sensor to detect objects in opaque containers and penetrate through dust, rain, dirt, smoke, haze, and similar obstructions. The Allen-Bradley 22DJ3-4000 photoelectric sensors solid-state modular plug-in was made to be flexible and reliable.

The Allen-Bradley 22DJ3-4000 photoelectric sensor has agency approvals including the CSA and UL list approvals. The photoelectric sensor can be installed in any position on a panel, bracket, frame, or wall. Ensure that is it is stored in a safe place to avoid mechanical damage or moisture damage when it is not in use. To fasten the plug-in control module in place, the technicians can use machine screws, wood screws, or bolts. When doing external wiring, make sure that the wiring conforms to all the requirements of the National Electric Code. The control circuits for the photoelectric sensor are filtered to minimize the effects of transients. The best procedure for wiring the 22DJ3-4000 photoelectric sensors is by bringing the line output voltage leads in from the upper side, and the low voltage leads in from the lower side. It has an ambient temperature range of -40 to 185 degrees Fahrenheit (-40 to 85 degrees Celsius).