The Quadrature of the Circle. Infrared presence detector Presence Control PRO IR Quattro COM1 AP for indoor use, ideal for small offices, storage, utility, and laundry rooms, washrooms, and restrooms. Installation height up to 8 m, surface-mounted version for controlling lights, 1760 switching zones for excellent detection quality, square detection with a 16 m² presence area, mechanically scalable. Live comfortably while saving energy. More quality of life, safety, and energy savings through intelligent sensor technology from STEINEL. Lights on/off – automatically. Highly innovative sensors respond to movements and light conditions, automatically turning the lights on and off after a set time. The infrared presence detector Presence Control PRO IR Quattro COM1 AP features a unique square detection area and COM1 interface in an installation-friendly surface-mounted version. It controls the lighting based on presence and ambient brightness. The sensor technology with 1760 switching zones guarantees excellent detection quality: 4 x 4 m presence detection, 5 x 5 m radial detection, and 7 x 7 m tangential detection. The rectangular detection and the option for infinitely adjustable mechanical range setting allow for highly precise planning. Adaptation to the specific usage situation is achieved through additional functions via potentiometers and remote control (IQ mode for automatic adjustment of the after-run time to room usage, pulse mode for controlling a stairwell automation, etc.) as well as through DIP switches (semi/full automatic, etc.). The detection range can be expanded through Master/Master or Master/Slave networking. Optional remote controls allow for comfortable installation and operation.