Smart Thermostats and Climate Control
RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer, Black
$75.99
Compatible with 2- and 3-wire thermostat, this all-in-one relay includes a built-in 24 V transformer
Direct replacement for any brand name relay
Built-in 24 V transformer for easy installation.
Compatible with 24V thermostats with 2-wire connections (R,W) or 3-wire connections (R,W,C)
Immediate relay activation provides improved temperature control and comfort
Customers say
Customers find the relay works well with Quellet 10,000 watt electric heaters and Nest thermostats, with clear instructions for installation. The product is well-made and provides a 24V common power line, with one customer noting its ability to control multiple rooms. While some customers consider it the best low-cost option, others find it expensive for its functionality.
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