RCR-21 sensor is designed to detect motion. Additionally, it has a built-in illuminance sensor that controls the operation according to the intensity of sunlight. The sensor can work directly with selected EXTA LIFE receivers or the EFC-01 controller. In the case of a controller after connecting the sensor with logical functions, the sensor can participate in automating of the control processes of various devices in home installations. RCR-21 is based on a PIR digital sensor that enables a fairly precise change of sensitivity which in turn translates into adjustment of the operating range and the size of detected objects. The sensor is equipped with an accelerometer with anti-tamper function. Motion detection is signalled by a LED that can be switched off. The sensor can be powered by batteries (by default) or an external voltage source (6 ÷ 24 V AC/DC) through a PCL-21 power cradle. In the case of external power supply, sensor configuration is possible. The power cradle also allows for using the sensor output, for instance to connect it to the alarm system. The magnetic pad enables quick installation of the sensor, guarantees full mobility and convenient directing. The sensor is to be operated indoors only (IP20).