10Pcs Pir Sensor AM312 Mini Pir Motion Sensor Module Body Sensors Manual Motion Infrared IR Detector for AR duino

About this item

• AM312 PIR Sensor Module: A digital intelligent automatic control product based on passive infrared technology, featuring high sensitivity and reliability, widely used in various automatic sensing electrical devices.
• PIR Sensor Parameters: Operating Voltage: DC 3-12V; Static Power Consumption: <0.1mA; Sensing Range: 120-degree cone angle, 2-5 meters; Block Time: 2 seconds; Delay Time: 2 seconds; Trigger Mode: Repeatable; Output Level: High 3V after triggering (depending on the lens); Operating Temperature: -20°C to +60°C
• Product Features: 1. Enhanced anti-interference performance, internal digital signal processing, and direct high and low level output. 2. Repeatable triggering mode: After the sensor outputs a high level, if a person moves within the sensing range during the delay period, the output will remain high until the person leaves, at which point it returns to a low level. (This means that the sensor module automatically extends the delay period for each detected human activity, with the last detected activity serving as the starting point.)
• Pin Definition: VCC: Positive power supply (3-12V); OUT: Signal pin; GND: Power supply.
• This AM312 mini PIR sensor has a wide range of applications. You can use it in a variety of applications, such as motion-sensing lighting, entrance lighting, cabinet lighting, safe lighting, pantry lighting, bed rail lighting, motion-sensing toys, and industrial automation control.
• Note: Before use, carefully check the device's pinout diagram or datasheet to ensure VCC/GND/OUT correspondences correctly. Use a multimeter to measure the pin voltages to confirm normal power supply before connecting the Arduino to avoid reversing connections and damaging the device Sensor Installation and Debugging Precautions: The AM312 requires 1–2 minutes to warm up after power-on. Please wait patiently for the sensor to stabilize before testing. Avoid direct sunlight, air conditioning vents, and other areas with fluctuating temperatures during installation. A height of 1.5–2 meters with a downward tilt of 15°–30° is recommended for optimal detection results.
• Hardware Protection Tip: A 100Ω resistor can be connected in series with the sensor's VCC pin. Even if connected in reverse, this reduces short-circuit current and protects the Arduino board.