The HW-416-B is a high-performance passive infrared (PIR) motion sensor module, widely recognized as a compatible or upgraded version of the industry-standard HC-SR501. It is designed to detect human or animal movement by sensing changes in infrared radiation levels. Key Technical Specifications PIR Motion Sensor HW416B - Tayda Electronics
Technical Datasheet: HW-416-B PIR Motion Sensor The HW-416-B is a compact, high-sensitivity Passive Infrared (PIR) sensor module designed for automatic motion detection. It is widely used in DIY electronics, security systems, and energy-saving lighting projects due to its low power consumption and easy integration with microcontrollers like Arduino and Raspberry Pi. 1. General Description
A Passive Infrared (PIR) sensor measures infrared light radiating from objects in its field of view. The HW-416-B operates by detecting the thermal changes caused by moving human bodies or animals. It features a specialized Fresnel lens that focuses infrared radiation onto the internal pyroelectric sensor. 2. Technical Specifications Typical Value Operating Voltage 4.5V to 20V DC Output Level High: 3.3V / Low: 0V Quiescent Current Approximately Detection Distance Up to 7 meters (adjustable via potentiometer) Detection Angle <110∘is less than 110 raised to the composed with power Delay Time 5s to 200s (adjustable) Blockade Time 2.5s (default) Trigger Method L (non-repeatable) / H (repeatable) Operating Temperature 3. Pin Configuration
The module typically features a 3-pin interface for easy connectivity: VCC: Power supply input (4.5V – 20V).
OUT: Digital output signal. Transitions from 0V to 3.3V when motion is detected. GND: Common ground. 4. Key Features and Operation
Adjustable Sensitivity: The onboard potentiometer allows users to increase or decrease the detection range. High sensitivity can detect living beings up to 9 meters away. hw-416-b pir sensor datasheet
Adjustable Delay: Controls how long the "High" signal persists after motion is detected.
Repeatable Trigger (H-mode): If someone remains in the detection area, the output stays high until they leave.
Non-repeatable Trigger (L-mode): The output goes high and then low regardless of whether the person is still moving in the range. 5. Application Benefits
Energy Efficiency: PIR sensors are highly effective for energy-saving applications, ensuring lights or devices are only active when a room is occupied.
Low Interference: As passive devices, they do not emit radiation but rather sense it, making them safe and low-power. The HW-416-B is a high-performance passive infrared (PIR)
Microcontroller Compatible: The 3.3V logic output is compatible with both 3.3V and 5V microcontrollers without needing a level shifter. 6. Environmental and Mechanical Considerations
Fresnel Lens: Do not remove or damage the white plastic dome, as it is critical for the sensor's wide-angle detection.
Avoid Heat Sources: To prevent false triggers, do not place the sensor directly facing air conditioners, heaters, or direct sunlight.
Target Frequency: The sensor is optimized to detect motion frequencies between 0.7 Hz and 30 Hz.
Passive Infrared Sensor - an overview | ScienceDirect Topics Simple Arduino Sketch int motionPin = 2; int
int motionPin = 2; int ledPin = 13;void setup() pinMode(motionPin, INPUT); pinMode(ledPin, OUTPUT); Serial.begin(9600);
void loop() int motion = digitalRead(motionPin); if (motion == HIGH) digitalWrite(ledPin, HIGH); Serial.println("Motion detected!"); else digitalWrite(ledPin, LOW); delay(100);
The HW-416-B is one of the most popular and cost-effective Passive Infrared (PIR) motion sensor modules available in the electronics market. Often found in Arduino starter kits, security lighting projects, and automatic door systems, this module is frequently compared to its predecessor, the HC-SR501. However, the HW-416-B offers distinct advantages in terms of size, power consumption, and adjustability.
If you are searching for the official HW-416-B PIR sensor datasheet, you may have noticed that a unified manufacturer datasheet is hard to find. This is because the HW-416-B is a generic module design produced by several OEMs. To solve this, this article aggregates verified technical specifications, pinout definitions, timing diagrams, and calibration instructions to serve as the definitive reference for the HW-416-B.
Understanding the internal architecture helps in reading the datasheet correctly. The HW-416-B consists of:
The key IC on most HW-416-B boards is the BISS0001 (or a clone like the HT7610B). Referencing the BISS0001 datasheet can give you deeper insight into the timing and sensitivity adjustment.