resideo Hydronic Switching Relay, 120 V, 0.4 A, 5 W, 50/60 Hz, 24 V Coil, SPST Contact Form, AFL - 1.2 A at 120 VAC, 5.1 A at 240 VAC, ALR - 61.2 A at 120 VAC, 30.6 A at 240 VAC, Resistive - 10 A at 120 VAC, 6 A at 240 VAC Contact Rating, 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: Low-Voltage Controllers