Hw-416-b Pir Sensor Datasheet |work| [WORKING]

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Understanding the electrical and environmental limits of the HW-416-B is crucial for designing safe and long-lasting circuits. Specification 4.5V to 20V DC Can be powered by standard 5V or 12V rails Static Current Consumption < 50µA to 65µA Highly efficient for battery applications Output Signal Level High: 3.3V / Low: 0V Compatible with 3.3V and 5V microcontrollers Detection Distance Up to 3 to 7 meters Adjustable via onboard potentiometer (model dependent) Detection Angle < 100° to 120° cone Conical field of view shaped by the Fresnel lens Delay Time 0.5 seconds to 200 seconds Adjustable via onboard potentiometer Blockade Time 2.5 seconds Default blind period after output goes low Trigger Modes L (Non-repeatable) / H (Repeatable) Selected via jumper on the PCB Operating Temperature -15°C to +70°C Suitable for indoor and sheltered outdoor use PCB Dimensions Approx. 32mm x 24mm Standard standard PIR module footprint 3. Pinout and Hardware Configuration

Since the HW-416-B lacks an official manufacturer datasheet, you can substitute it with:

The HW-416-B offers an excellent balance of affordability, ease of use, and reliable motion detection performance. Its wide voltage tolerance, low power consumption (under 50 µA quiescent), adjustable sensitivity/delay, and dual trigger modes make it a go‑to choice for both hobbyist and professional motion detection applications.

The HW-416-B utilizes a pyroelectric sensor to detect infrared radiation variations emitted by moving objects, primarily humans and animals. It is a variant of the classic HC-SR501 PIR sensor module, sharing similar operational logic but offering a more compact form factor, making it ideal for space-constrained projects like smart lighting, automated alarms, and robotics. Key features include: hw-416-b pir sensor datasheet

Adjustable (typically 5s to 200s or more depending on the specific potentiometer settings). Static Current: < 50µA, making it ideal for battery-powered projects. Pin Configuration

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.

Because it detects changes in heat, avoid placing the HW-416-B near heating vents, air conditioners, direct sunlight, or incandescent light bulbs. Sudden drafts of hot or cold air can trigger the pyroelectric crystal.

What are you planning to use (ESP32, Raspberry Pi, etc.)? This public link is valid for 7 days

// HW-416-B PIR Sensor Integration Code const int pirPin = 2; // Input pin from HW-416-B OUT const int ledPin = 13; // Onboard LED indicator int pirState = LOW; // Start assuming no motion detected int val = 0; // Variable for reading the pin status void setup() pinMode(ledPin, OUTPUT); // Declare LED as output pinMode(pirPin, INPUT); // Declare sensor as input Serial.begin(9600); // Initialize serial communication Serial.println("Stabilizing sensor... please wait 10-60 seconds."); delay(30000); // Warm-up delay for PIR crystal stabilization Serial.println("Sensor active."); void loop() val = digitalRead(pirPin); // Read input value if (val == HIGH) // Check if the input is HIGH digitalWrite(ledPin, HIGH); // Turn LED ON if (pirState == LOW) Serial.println("Motion detected!"); pirState = HIGH; // Update state to prevent loop flooding else digitalWrite(ledPin, LOW); // Turn LED OFF if (pirState == HIGH) Serial.println("Motion ended."); pirState = LOW; // Update state Use code with caution. 6. Troubleshooting and Operational Considerations

Easily fits into small enclosures, smart switches, or hidden security nodes.

The HW-416-B is an electronic module designed to detect human or animal movement by measuring changes in the infrared (heat) levels emitted by surrounding objects.

| Feature | HW-416-B | HC-SR501 | | :--- | :--- | :--- | | Size | Smaller (32x24mm) | Larger (32x24mm approx, thicker) | | Quiescent Current | < 50 µA | < 65 µA | | Adjustable Time Delay | Usually fixed or very short (2.5s) | Yes (0.3s – 600s) | | Retriggering Mode | Internal (automatic) | Jumper-selectable (single/retrigger) | | Best for | Battery-powered, short-lived triggers | Security lights, long delays | Can’t copy the link right now

When the environment is static, both halves receive the same amount of IR radiation, resulting in a balanced 0V output. When a warm body passes through the detection field, it intercepts one half of the sensor first, creating a positive differential change. As it leaves, it intercepts the second half, creating a negative differential change. The onboard IC processes this differential pulse and triggers the pin to go High.

The HW-416-B features two potentiometers (often yellow) to fine-tune its behavior: A. Sensitivity Adjustment (SENS)

The sensor stays HIGH as long as motion is detected within the sensing area.