The Through Beam sensor from RS PRO has a flat space saving design allowing for direct mounting and no mounting bracket required. The thin photoelectric sensor provides you with a 50 cm emitter and receiver detection distance, using through beam sensor technology. The sensors are available separately as photoelectric emitter and receiver providing flexibility with installations plus are excellent for small, flat, and opaque object detection from as small as 2 mm.

The photoelectric sensor has a PC plus ABS, thin flat shape design plus is IP65 rated (dustproof) making the sensor suitable for use in harsh environments. Flexible and easy to operate, emitter and receiver, Red light source, LED output indicators, 1 Ms response time, short circuit, overload, reverse polarity, and Zener protection are just a few of the features within the RS PRO Photoelectric sensor.

As the RS PRO photoelectric through beam sensors are small, they are an excellent choice where space is limited and when fast, reliable, exact detection is important. With an immunity to light pollution and able to operate within exacting environments the sensors are a versatile tool within many industries.

• Suited for large operating ranges


• Detect almost any object, not affected by object colour, surface or angle of incidence


• Transparent object detection, pharmaceuticals, electronics


• Packaging and labelling, printing industry, food, and beverage


• Suitable for use in many different environments

This sensor is made up of a light emitter and a light receiver, the detection distance can be increased by separating the light emitter and receiver. When using the through-beam sensor the emitter and receiver are installed either side of the of the path of objects to be detected. When the object passes through the light beam the light is blocked by the object and the light receiving device acts to output a switch control signal.

RS PRO is the own brand of RS. The RS PRO Seal of Approval is your assurance of professional quality, a guarantee that every part is rigorously tested, inspected, and audited against demanding standards. Making RS PRO the Smart Choice for our customers.