The PIR motion detector enables motion detection by analyzing infrared radiation reflected from objects. The detector's design detects changes from 2 separate IR windows and the amplifier converts this impulse into a high level of logic. The sensor's output can be connected to the digital input of the INP1-4D controller lan. However, it should be noted that the detector's forced low state is the idle state and high state indicates PIR triggering.

Two potentiometers Sx and Tx are placed on the board, thanks to which the user can adjust the operation of the sensor to his needs. These potentiometers are marked with symbols Sx and Tx. Tx is used to set the time to maintain the output after motion detection. Sx sets the standby delay time after the last trigger. When motion is detected, the output is kept high continously.