There are over 4042 interoperable
T500B Z-Wave Thermostat.
Thermostat requires 24VAC power with minimum 5 wires for most single stage heating and cooling installations. One of the 5 wires must be common.
Not for use with 120/240V electric baseboard heat, proprietary communicating systems, or radiant floor heating systems.
Dual-fuel operation requires accessory kit available from equipment manufacturer.