The Helios Fans PIR is a compact occupancy sensor designed to automatically control ventilation fans up to 6 amps. It activates the fan upon detecting movement and continues operation for a set period after the room is vacated — enhancing energy efficiency by ensuring the fan only runs when necessary. Featuring a wide 170° hemispherical detection range, this unit is suitable for wall or ceiling mounting. Supplied in a surface-mounted terminal box, it fits into a standard single-gang surface or recessed electrical box. Operating at 240V/50Hz, the PIR sensor measures 80 x 80 x 15 mm and is ideal for bathrooms, offices, or utility spaces requiring intelligent fan control.