The VPA-2 Battery back unit is designed for the use Ventcrofts VPA-2 Disabled Persons Response Alarm, it allows the VPA-2 to continue to function during a mains failure. With a single battery  the DPA will last for around 4 Hours and with 4 batteries the stand-by time is up-to 20 hours. The battery Back-up Unit is sold complete with 1 battery and is easy expand to 4 batteries.

While the DPA has mains applied and the batteries are charging the front mounted Green battery charge LED will Illuminate. The Back-Up unit is sold complete with a Surface Mounting back-box and be fitted either surface or flush.

Features

Small Size Double Gang
Battery Charge LED 
Supplied with 1 Rechargeable Back Up battery
Complete with Surface mounting back box.
Expandable up to 4 batteries for elongated battery stand-by
 Individual terminal for each battery.

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