The Secure Smart Programmable Thermostat C1727 & Programmable Thermostat Display PTD is a white, corded electric thermostat with a digital control style and 1.76-inch display size. It has a 7-day programmable schedule, 3 heat stages, and features Bluetooth connectivity for smart home compatibility. This thermostat is compatible with Horstmann brand products and is wall-mounted with a rectangular shape. Made of plastic, it operates on 240V of line voltage and uses temperature sensor technology for efficient heating control. With an auto system switching feature, this programmable thermostat offers convenient and energy-saving heating management for your home.