The Secure E7 Smart Immersion Heater Control is a programmable thermostat with a 7-day schedule, designed to be wall-mounted and operated via a rectangular-shaped interface. It is compatible with Horstmann brand heating systems and offers smart home compatibility through Bluetooth/Bluetooth Low Energy (BLE) technology. Made from white plastic, this thermostat control is powered by a corded electric connection and features automatic system switching for added convenience. With a sleek design and programmable settings, this immersion heater control is the perfect choice for efficient heating management in your home.