Stelpro 24V Electromechanical Relay w Transformer, 6000W @ 120-347V Features:

• Up to 6000W @ 120-347V.
• Do not install more than four relays without a transformer to the same thermostat.
• You cannot connect relays to the same control circuit as a relay with a transformer.
• Installation: relays can be installed in an external junction box.
• These relays may or may not be installed in the junction box of the heating unit.
• Certifications: cUL/UL Listed.
• Dimensions: 3.36-in (L) x 2.66-in (W) x 1.63-in (H).