The Timeguard DS3HDN IP65 4kW Time Lag Switch is ideal for use with incandescent, fluorescent lighting, and heating up to 4kW. It features an IP65 weatherproof rating and allows for light ON times selectable from 2 minutes to 3 hours via a 3 position DIL switch. The switch has adjustable time delay settings ranging from 2 minutes to 3 hours, with a blue LED that flashes 1 minute before the end time as a prompt to the user. It requires a 3 wire connection with a neutral wire. This switch is suitable for controlling LED Lighting up to 150W, Filament LAs up to 4kW, and Permissible Loads (Low Voltage) ranging from 20-200W. The operating voltage is 230V AC, and the operating temperature ranges from -10°C to +40°C. The switch is compact with dimensions of 94x94x57 mm, conforms to the latest EC Directives, and is designed for professional use.