Senba SB612A-02-001-L PIR Motion Sensor Module - 8m Range, 115° Angle, 3.8-12V DC

The module provides a digital TTL-level output signal. When motion is detected, the output pin switches to a logic HIGH state (approximately equal to the supply voltage). It remains HIGH for the user-defined delay period after motion stops, then returns to a logic LOW state. This digital output can directly drive microcontroller input pins, logic circuits, or transistor-switched relays.

The module features three onboard potentiometers for adjustment. One controls the detection sensitivity (range), another sets the output delay time (from approximately 2 seconds up to 70 minutes), and a third sets the ambient light threshold for day/night mode operation. Use a small screwdriver to turn these potentiometers; clockwise rotation typically increases the parameter value.

Yes. With its wide operating voltage range of 3.8V to 12V DC, the module is fully compatible with standard 5V Arduino boards. For 3.3V systems like Raspberry Pi, you can power the module with 5V from a separate source while its digital output (which swings between 0V and the supply voltage) can be safely connected to the Raspberry Pi's 3.3V GPIO using a simple voltage divider or logic level converter if the supply voltage exceeds 3.3V.

The sensor has a 115-degree wide-angle conical detection pattern. For optimal coverage, mount it on a wall or ceiling at a height of 2-3 meters, facing the area to be monitored. Ensure the lens is clean and avoid pointing it directly at heat sources (like radiators or windows with strong sunlight) or moving objects like fans or curtains, which can cause false triggers.