Timeguard TGBD4 4 Hour Electronic Digital Boost Timer\n 4 Hour Electronic Digital Boost Timer Timeguard TGBD4 The Timeguard TGBD4 4 Hour Electronic Digital Boost Timer is an easy-to-use solution for those looking to control and boost their heating systems. With its intuitive interface, you can easily set your heating schedule according to your needs and preferences, ensuring that your home or office is always at the perfect temperature. The TGBD4 features a simple boost function, allowing you to quickly and easily boost your heating system for a period of 4 hours. This feature is perfect for those times when you need an extra burst of heat, without having to adjust your heating schedule permanently. The digital display on the TGBD4 is easy to read and navigate, allowing you to set and adjust your heating schedule with ease. The device is also battery-powered, meaning you can place it anywhere in your home without the need for a power outlet. The TGBD4 is compatible with a wide range y