Hw-416-b Pir Sensor Datasheet Work Jun 2026

Unlike the HC-SR501, which often has a 3-pin header, the HW-416-B typically exposes labeled on the back of the PCB:

Turning this clockwise increases the detection range (up to ~7 meters). Turning it counter-clockwise decreases the range (down to ~3 meters), making it less susceptible to background movement.

// Define pins const int PIR_PIN = 2; // HW-416-B OUT connected to digital pin 2 const int LED_PIN = 13; // Onboard LED void setup() pinMode(PIR_PIN, INPUT); // Set PIR pin as input pinMode(LED_PIN, OUTPUT); // Set LED pin as output Serial.begin(9600); // Initialize Serial Monitor Serial.println("PIR Sensor Warm-up: Waiting for stabilization..."); delay(30000); // Allow 30 seconds for the sensor to stabilize Serial.println("Sensor Active."); void loop() int sensorState = digitalRead(PIR_PIN); if (sensorState == HIGH) digitalWrite(LED_PIN, HIGH); // Turn on LED Serial.println("--- Motion Detected! ---"); else digitalWrite(LED_PIN, LOW); // Turn off LED delay(100); // Small delay to prevent serial flooding Use code with caution. 5. Troubleshooting False Triggers

The HW-416-B PIR sensor is a reliable and versatile motion detection solution suitable for a wide range of applications. Its high sensitivity, low power consumption, and adjustable sensitivity make it an ideal choice for designers and engineers. By following the usage guidelines and specifications outlined in this write-up, you can effectively integrate the HW-416-B PIR sensor into your projects. hw-416-b pir sensor datasheet

1.0 Date: Based on common HW-416-B specifications as of 2026 Compliance: RoHS (lead-free) for most variants

Do not connect the output directly to a high-current load (e.g., a relay or LED strip). Use a transistor or an optocoupler for isolation.

Comprehensive Guide to the HW-416-B (HC-SR501) PIR Sensor Datasheet: Specifications, Wiring, and Applications Unlike the HC-SR501, which often has a 3-pin

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

modules include a jumper to switch between two trigger modes: Non-Repeatable Trigger (L):

3.3V TTL High/Low (High when motion is detected). ---"); else digitalWrite(LED_PIN, LOW); // Turn off LED

Avoid placing the sensor near heat sources (heaters, sunlight) or air currents.

| HW-416-B Pin | Arduino Pin | |--------------|-------------| | VCC | 5V | | GND | GND | | OUT | Digital Pin 2 (or any digital input pin) |

Adjusts the detection distance. Turning clockwise generally increases the range. Time Delay (TIME):

The HW-416-B supports both repeatable and non-repeatable trigger modes via its jumper. If the sensor is not retriggering during continuous motion, ensure the jumper is set to (Repeatable) mode.