The T-PB series is comprised of UL Listed (–1 suffix units) and UL Recognized Component (–0 suffix units) power supplies which provide 24VAC from a 115VAC @ 1.0A input. Each T-PB series unit includes a green pilot LED which, when illuminated, indicates that the 24VAC output is operational. A DPDT ON/OFF switch is provided in the 115VAC input.