The Tower Optimum OP-IHTGPT Immersion Heater Timer is a wall-mounted unit designed for hardwired installation. It features a 24-hour manual analogue timer, allowing users to schedule when their immersion heater will turn on and off. This model is branded as Tower and is known for its reliability and functionality in controlling heating systems efficiently. Perfect for those looking to have control over their immersion heater usage, the Tower Optimum OP-IHTGPT is a convenient and practical addition to any home. Working fine when removed See pictures