Active Infra-Red Beams, sometimes called Point-to-Point Beams, are a reliable and long-established method of intruder detection. Once set up they are extremely stable, with a high detection rate and low false alarm rate. Active Infra-Red Beams* are sold (and work) in pairs, comprised of 1 x Transmitter (Tx), and 1 x Receiver (Rx). The Transmitter sends out a modulated (Pulsed) beam of infra-red light which is detected by the Receiver. Any object breaking this beam will be detected, and this action can generate an alarm along with call and sms
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