Radio Thermostat ct100 User Manual page 56

Statement Of Use
100% Compatible with all popular residential HVAC systems: 24VAC single stage
and two stage conventional heating systems (gas, oil, electric), heat pumps with
up to two stages of heat and up to two stages of auxiliary heat (electric or fossil),
zoned forced air and zoned hot water (2 or 3 wire), millivolt systems (with a 12-
24V AC or DC source), one or two stage cooling, and hybrid systems. Do not use
this thermostat with with line voltage heating systems.
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