Hw-416-b Pir Sensor Datasheet -

Turning on LED strips or lamps when someone enters a room and turning them off after they leave.

The is a standard Passive Infrared (PIR) motion sensor module, frequently used in DIY electronics projects with microcontrollers like Arduino, Raspberry Pi, and ESP32. It is essentially a variant of the widely documented HC-SR501 module. Technical Specifications Operating Voltage: typically 4.5V4.5 cap V 12V12 cap V Output Signal: Digital HIGH ( 3.3V3.3 cap V ) when motion is detected; Digital LOW ( ) when idle. Detection Range: Adjustable up to meters (approx. Detection Angle: Approximately 110∘110 raised to the composed with power Quiescent Current: Extremely low, often less than Time Delay: Adjustable from approx. seconds to seconds via on-board potentiometer. Pinout and Connections

| Pin | Name | Description | |-----|------|-------------| | 1 | VCC | Power supply (5V typical, compatible with 4.5V–20V) | | 2 | OUT | Digital output: HIGH (3.3V) on motion detection, LOW when idle | | 3 | GND | Ground connection |

If a person remains in the detection range, the output will stay "High" until they leave. Once the motion stops, the signal stays High for the fixed 2-second delay before dropping to Low. Quick Connection Guide (Arduino Example) To test the sensor, you can follow this simple setup: VCC →right arrow Arduino 5V GND →right arrow Arduino GND OUT →right arrow Arduino Digital Pin 2 hw-416-b pir sensor datasheet

Do not point the sensor toward radiators, AC vents, open windows, or heating ducts. Rapid air-temperature fluctuations trick the sensor.

The HW-416-B features two adjustable potentiometers on the PCB:

The HW-416-B features a highly intuitive hardware layout, typically consisting of a 3-pin interface for connectivity, two potentiometers for manual tuning, and a jumper configuration for trigger selection. Pin Configuration Turning on LED strips or lamps when someone

Decreases the output high duration (down to ~5 seconds). 3. Jumper Trigger Selection

The HW-416-B and HC-SR501 are largely in function and specifications, often marketed as interchangeable products. Both:

Ensure the supply is stable. While rated up to 20V, 5V is generally optimal for hobby projects. If you are interested, I can: Explain how to increase the range beyond 7 meters. Technical Specifications Operating Voltage: typically 4

Choose the HW-416-B for low-power IoT sensors or motion-activated sound effects. Choose the HC-SR501 for hallway lights or alarm systems requiring a long output pulse.

Digital signal to your microcontroller (e.g., Arduino Pin 2). GND: Connect to common ground. 💡 Pro Tips for Stability

When the sensor is idle, the output is LOW. When motion is detected, the sensor generates a signal, making it compatible with both microcontrollers like Arduino. 5. Adjustments and Calibration (Potentiometers)

| Parameter | Min | Typical | Max | Unit | | :--- | :--- | :--- | :--- | :--- | | Supply Voltage (VCC) | 4.5 | 5.0 | 20 | V | | Output Current (sink/source) | – | 10 | 100 | mA | | Output Logic High | 2.4 | 3.3 | 3.5 | V | | Output Logic Low | 0 | 0.4 | – | V | | Standby Current | 20 | 45 | 60 | µA | | Warm-up Time (initial power-on) | – | 30 | 60 | sec |