12V AC Sine Wave Power Supply with Emergency Battery Backup Option for ActiveLED® and other Low Voltage 12V AC devices such as spider lights.

An additional (one) output that comes on when power fails allows the attachment of a 12V-AC siren and / or 12V-AC light.

OSHA requires that when people working in a tank which is also a hazardous area and a conductive and confined space, with lighting a siren of not less than 90db at the half way point between the power source and the tank be used.

The 1770 Series of 12V-AC UPS Transformer / Power Supply fulfils all those requirements.