Description
The Honeywell Home/Resideo RC840T‑347 is an electromechanical relay engineered to simplify integration between high-voltage heating systems and low-voltage thermostats. Featuring a built-in 24 V transformer, it enables seamless control of 347 VAC line-voltage loads using standard 2‑ or 3‑wire thermostats (R, W, C).
Features:
- Direct replacement for any brand name relay
- Built-in 24 V transformer for easy installation
- Compatible with 24 V thermostats with 2-wire connections (R, W) or 3-wire connections (R, W, C)
- Immediate relay activation provides improved temperature control and comfort
- Epoxy-soundproofed relay ensures quiet operation
- Low current consumption means multiple relays can be controlled by a single thermostat
