These specifications show the HW-416-B is suitable for many indoor motion-sensing applications. Its wide voltage range and low power consumption make it ideal for battery-powered, IoT, and energy-harvesting projects.
The is a passive infrared (PIR) motion sensor module, widely recognized as a variant or rebranded version of the popular HC-SR501 PIR sensor . It uses the BISS0001 controller chip to detect human presence by measuring changes in infrared radiation. Core Specifications
This code, adapted from a hardware tutorial for the HW-416, checks the sensor's output and reports the detection state.
The HW-416-B uses a simple three-pin interface (VCC, OUT, GND), but also features a four-pin configuration header that allows advanced options. hw-416-b pir sensor datasheet
The is one of the most popular and cost-effective Passive Infrared (PIR) motion sensor modules available on the market. Often recognized by its white circular housing and three-pin male header, this board is a staple in Arduino, Raspberry Pi, and ESP32 projects. Despite its widespread use, finding a consolidated, accurate datasheet for the HW-416-B can be challenging, as it is frequently confused with the HC-SR501.
Some HW-416-B modules use an onboard 3.3V regulator , so the output pin is 3.3V – safe for 5V logic inputs (e.g., Arduino, STM32).
Looking directly at the back of the PCB board (with the pins facing downward), the layout is typically configured as follows: These specifications show the HW-416-B is suitable for
For a 3.3V logic system (like an ESP32), you can power the module using the dedicated 3.3V configuration pin instead of the standard 5V input, as described in the previous section.
The is a compact Passive Infrared (PIR) motion sensor module, commonly used in DIY electronics projects for detecting human movement. It is essentially a variation of the popular AM312 or HC-SR501 sensors, designed for low-power consumption and a smaller physical footprint. Core Specifications Operating Voltage: 2.7V to 12V DC. Static Power Consumption: (ideal for battery-powered devices). Output Signal: High/Low (3.3V High, 0V Low).
If motion is detected continuously within the delay window, the internal timer resets, keeping the output HIGH until the target stops moving and the delay time elapses. 🔬 How the HW-416-B Works It uses the BISS0001 controller chip to detect
5 seconds to 200 seconds (adjustable via potentiometer) Blockade Time: 2.5 seconds (default)
The module exposes three interface pins, typically clearly labeled on the bottom silk-screen of the PCB: Input power supply (4.5V – 20V DC).
| 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 |