Honeywell Electric Heating Relay
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Electric Heating Relay
The RC840T Electric Heating Relay is designed to control a line voltage resistive load from a low voltage thermostat. The RC840T relay has a built-in 24 V transformer and is compatible with 3-wire (R,C,W) thermostats as well as 2-wire mechanical and battery-operated thermostats.
The RC840T operates silently and can be installed in bedrooms, living rooms, or any other occupied area without disturbing occupants. On a call for heat, the relay is immediately activated; there is no delay. This increases temperature control and comfort.
Not recommended for fast-cycling modulated regulation. For fast-cycling heating equipment, It is recommended to use the RT850 or RT850T (integrated 24 V transformer) Solid State Relay.
Replaces Manufacturer Part Number: RC840T-277