Battery operated on board photocell A standard PIR cell is made up of two parts: an infrared transmitter and an infrared receiver. The integrated photocell IR20E combines an infrared transmitter with a radio transmitter in the same case. The radio receiver is built into the infrared receiver. One of the main advantages of this unit is the fact that the transmitter cell is battery operated (9Vdc). This battery should be replaced every six months. Dry switched alarm output NC. Relay break capacity: 1A. The transmitter cell fixed for example onto a sliding door sends a signal to the receiver cell as soon as the anti crush bar is activated. This system avoids having rolls of cables or conducting rails.

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