As a versatile timer switch, STBT4 focuses on straightforward setup and consistent operation. Key details include Typical applications Immersion Heaters Room Heaters Towel Rails Lighting, Countdown timer can be cancelled by pressing the boost button mid-cycle, Bright illumination of the boost button at all times, Automatic timer countdown for up to 2 hours, and Various Boost Options. Support for up to 2 hours broadens its use cases. The design aims to reduce maintenance while keeping performance stable over time
