Boiler Reset Control Two Stage User Interface LCD Display Sensor 10K Thermistor (2) Dry Contact 24V AC 5A 3 VA 1 ft 12-18 Gauge for 120V AC Connections 14-22 Gauge For All Other Connections Screw Terminals -30F - 200F 2 3/4 in 9 3/4 in 5 1/2 in 102 lb CSA C/US For Use With ZVC-EXP or SR-EXP Controls Includes Instruction Sheet Outdoor Sensor Strap-On Sensor