subscribe(thermostats, "heatingSetpoint", handleHeatingSetpointEvent)
subscribe(thermostats, "coolingSetpoint", handleCoolingSetpointEvent)
subscribe(thermostats, "thermostatMode", handleThermostatModeEvent)
subscribe(thermostats, "heatingSetpoint", handleHeatingSetpointEvent)
subscribe(thermostats, "coolingSetpoint", handleCoolingSetpointEvent)
subscribe(thermostats, "thermostatMode", handleThermostatModeEvent)