An electronic entrance-monitoring device that creates an invisible infra-red beam between the two units, which can be positioned up to 20 metres apart.

An alarm sounds when the beam is broken, e.g. by someone moving through it.

Suitable for care of the elderly, children or pets.

Features three volume settings and alarm tones, with either single or continuous alarm sounding.

Easy to set up, with LED alignment indicator on each unit.

Units measure 9.5 x 7 x 2.5cm.

Each unit runs on 1 x 9v battery (not included).