The Timeguard TGBT4N 4 Hour Electronic Boost Timer is a compact and reliable push-button timing control solution designed for efficient management of heating and electrical appliances. With its simple user interface and programmable boost durations, it delivers convenience, safety, and energy efficiency for modern homes and commercial spaces. Key Features : Electronic Boost Control: Push-button timer with selectable boost periods for easy operation Multiple Time Settings: Offers 1/4 hr, 1/2 hr, 1 hr, 2 hr, and 4 hr ON durations Automatic Safety Cut-Off: Countdown function ensures load switches OFF after selected time LED Status Indicator: Clear visual display of active timing and operation status Wide Application Use: Ideal for immersion heaters, room heaters, towel rails, and lighting circuits BS Fuse Protection: Integrated protection for safer appliance operation Easy Replacement Design: Fits standard single-gang flush or surface wall boxes Specifications : Product Type: 4 Hour Electronic Boost Timer Finish / Colour: White Material: High-grade thermoplastic Load Rating: 13A (up to 3kW) Time Settings: 1/4 hr, 1/2 hr, 1 hr, 2 hr, 4 hr Mounting: Standard BS wall box (min. 25mm depth), flush or surface mount Dimensions: 85mm (H) x 85mm (W) x 31mm (D) Protection: BS1362 fused switch protection Operation Type: Push button electronic control