Honeywell Home Smart Series RTH6500WF Wi-Fi Programmable Thermostat w/ Manual This thermostat allows you to program up to 7 days in advance, ensuring your home is always at the perfect temperature. The digital display makes it easy to read and adjust the settings, while the rectangular shape and white color fit seamlessly with any home decor. It is compatible with X brands and models, and is wall-mounted for easy installation. The low voltage system switching ensures optimal performance, and the battery power source ensures that it will work even during power outages.