Mini PIR Sensor with Time and Sensitivity Control - BS612

The Mini PIR Sensor BS612 is a fantastic device for detecting motion. It can spot movement from pets, humanoids, and even possibly zombies (though not guaranteed) from around 5 meters away. What makes it stand out is its compact size, much smaller than most PIR modules. This makes it perfect for projects where you don't want it to be too noticeable. It's fully self - contained and highly configurable. After connecting power and ground, you can use the remaining 3 pins to set whether the sensor is enabled (OEN), how sensitive it should be to motion (SENS), and how long the output stays active (ON TIME). With 6 pins and long, flexible wires, it's friendly to breadboards and perfboards. It runs on 3.3V power. If you're using it with an Arduino or other 5V chips, power it from the 3V regulator. The digital signal output is 3.3V high/low. You can adjust the time the signal pin stays high by connecting a resistor to the ONTIME pin, ranging from 2 seconds (0V) up to one hour (3.3V). You can also change the sensitivity of the PIR element by connecting a resistor to the SENS pin, from most sensitive (0V) to least sensitive (3.3V). Refer to the datasheet for recommended resistor values. To use it, follow the datasheet pin - out diagram. The snap - on lens is focused at 5 meters with a 120 - degree spread and works from about 3 to 8 meters. It's smaller and cheaper than our other PIR modules, with decent performance but not as good as larger ones in terms of range and trigger time. Check out our PIR sensor tutorial page for CircuitPython and Arduino code examples and project ideas. The BS sensor window is 4mm x 3mm. We also offer the BL412 PIR sensor, which has a larger sensing element and is more sensitive but lacks the extra configuration pins.

Using the Mini PIR Sensor BS612 is easy. First, connect the power and ground. Then, use the remaining 3 pins to configure the sensor. To enable the output, connect pin #4 (OEN) to 3.3V. Connect pin #3 (VSS) to ground and pin #4 (VDD) to 3.3V. You can adjust the sensitivity by connecting a resistor to the SENS pin. For maximum sensitivity, connect pin #1 (SENSE) to ground. To set the on - time, connect a resistor to the ONTIME pin. Connecting it to ground gives an on - time of 2 seconds. Check the signal on pin #5 (REL). Note that this sensor runs on 3.3V power. If you're using it with a 5V device like an Arduino, power it from the 3V regulator. The snap - on lens is focused at 5 meters but can work from 3 to 8 meters. Keep it away from direct heat sources as this can affect its performance. For maintenance, just keep it clean and free from dust. If you want more details, check out our PIR sensor tutorial page with code examples and project ideas.