Bolton SUL 181H (Analog Timer Switch) is a compact and reliable device designed for precise 24-hour time-based control of electrical loads. Built with high-quality components, it offers durability, accuracy, and safe operation. Featuring an easy-to-use dial and multiple on/off settings, the Bolton SUL 181H is ideal for controlling lighting, heaters, pumps, and appliances in residential, commercial, and industrial applications, ensuring convenience and energy efficiency.