How long do the batteries last in the remote module?

The remote modules are operated by customary storage batteries and batteries. The batteries in the add-on modules last for up to about one year. An earlier replacement of batteries is signalled through the system (Display). Furthermore the system is checked by the LISTENER system consultant on site every year and the batteries are replaced.

LISTENER Motion detector

Passive-Infrared-Alarm to detect moving heat sources in the areas. Angle of coverage 90°, approx 10 m range. Sabotage-proof.

Connection via remote transmission.

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