AX-250/500PLUS Series are cost-effective long-range dual beams for internal or external applications.

Suitable for external ranges up to 150m outdoors, the beams have twin infrared transmitters and receivers to reduce the potential for alarms from small animals, blowing debris and falling leaves. Beams operate by only triggering an alarm when both beams are broken simultaneously. Initial alignment can be carried out using the built in optical aiming device to roughly set the sensors and then fine-tuning can be carried out using a standard volt meter.