Honeywell AT72D1683 Transformer, 40 VA, D

24 V control circuit step-down transformer designed to power any 24 V control system, including thermostats, gas valves and/or relays. Voltage (50/60 Hz) 120. Connections 2 screw terminals, can be foot-mounted, plate mounted on 4 in x 4 in, 4 in octagon or 2 in x 4 in electrical boxes (transformer all above plate or 3/4 above plate) or clamp mounted via a junction box knockout.