iO HVAC Controls iO-Twin Universal Twinning Kit 549i CUT DEPTH (C): 9/16" OVERALL

CUT DEPTH (C): 9/16" OVERALL DIA

5/8 and 3/4-inch (6

Undercut-indented hex washer slotted head

Cut Depth:

and has a low battery indicator

iO HVAC Controls iO-Twin Universal Twinning Kit 549i CUT DEPTH (C): 9/16" OVERALLiO HVAC Controls iO Twin Universal Twinning Kit The twinning kit is designed to allow a single thermostat to control two separate HVAC units. It can also be expanded to control a total of four HVAC units. The twinning kit can be used on common or separate ducted systems with single stage, multi stage and heat pump equipment. Only standard 18 gauge thermostat wire is required. Thermostats and HVAC units can be located up to 300 from the twinning kit