The Smart Knob Thermostat is a WiFi and Bluetooth capable thermostat that can be controlled through a smart phone. It features a rectangular shape and digital control style, with a white color and 24V voltage. The thermostat has a temperature sensor and is programmable for 1-7 days. It also has a child lock feature and a digital display. The Smart Knob Thermostat is perfect for home heating, cooling, and air systems.