resideo Hydronic Switching Relay, 120 V, 0.4 A, 5 W, 50/60 Hz, 24 V Coil, DPST Contact Form, 7.4 A at 120 VAC, 3.7 A at 240 VAC Full Load, 3 A at 120 VAC, 2 A at 240 VAC Secondary, 44.4 A at 120 VAC, 22.2 A at 240 VAC ALR, 18 A at 120 VAC, 12 A at 240 VAC Secondary, 10 A at 120 VAC, 6 A at 240 VAC Resistive Contact Rating, 1-Pole, 2-Wire Control Circuit Terminal, 105 to 115 deg F, 2-5/16 in Overall Length, 4-1/4 in Overall Width, 5-1/4 in Overall Height, For Use With: 24 V 2-Wire Thermostat Controls