iO HVAC Controls iO-Twin Universal Twinning Kit 549i Certified intrinsically safe by MET

Certified intrinsically safe by MET Laboratories for use in combustive/explosive environments

and has a low battery indicator

Undercut-indented hex washer slotted head

Punches a 1 11/32” hole

It may also be used for AUTOMATIC Charging and Recovery when paired with a mobile device running the CPS Link app

iO HVAC Controls iO-Twin Universal Twinning Kit 549i Certified intrinsically safe by METiO 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