The New Secure Horstmann Immersion Heater Controller Smart Timer Bluetooth E7+ is a programmable thermostat perfect for controlling your heating system with ease. This white, wall-mounted controller features a 7-day programmable system and can be controlled via the Secure App, digital display, or Bluetooth connectivity. With its temperature sensor technology and adjustable thermostat settings, this unit offers smart home convenience and energy efficiency, making it a reliable choice for managing your home's heating needs.