7805 Uninterruptible Alarm Power Supply

Although this Power Supply was designed for the Modular Burglar Alarm – it has other applications. It provides an output of 12-volts – at a current of up to 1-amp. In the event of a mains failure – the back-up battery takes over immediately. And when mains power is restored – the battery recharges automatically.

7805 Uninterruptible Alarm Power Supply: [Link]