The Aprilaire 8081 support module can be used with the following thermostats:
The Aprilaire 8081 Temperature Sensor Module is designed for use with the Aprilaire model 8800 Universal Communicating Thermostat and supports one onboard and one external temperature sensor. This temperature module can be used to monitor temperature and/or humidity in various rooms or throughout a larger area. The Aprilaire temperature sensor also includes a set of useful instructions.
Aprilaire 8081 Temperature Sensor Module specifications: