Stanley Security BT150-07 ELR Battery Backup Kit

The BT150-07 Battery Backup Kit is an optional card for ELR150-series power supplies that provides temporary 24VDC power to ELR devices during a power outage. It requires two 12V lead-acid batteries wired in series (batteries not included) and includes a 24VDC power tap rated at 0.8A to supply connected components such as exit devices and readers. Backup time varies with load, and a one-amp-hour battery set is cited as providing roughly 15 minutes of backup to four exit devices. The kit supports a user-selectable 0–4 minute time delay after input loss, and the fire alarm signaling features include a red LED that blinks when the fire alarm interrupts the circuit, terminating output as designed.