An electronic entrance-monitoring device, which creates an invisible infrared beam between the two units up to 20 metres apart. Alarms when someone moves through the beam. Suitable for care of the elderly, children or pets.
Transmitter and receiver create an infrared beam up to 20 metres
Alarms if someone moves through the beam
Three volume level settings and alarm tones
Two distance settings
Each unit uses 1 x 9v battery (not included)