Honeywell Home 277v Relay w/ Built In 24V Transformer

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