Datasheet - Hw-416-b Pir Sensor

If you’re building a motion-activated light, security alarm, or smart occupancy sensor, you’ve likely come across the HW-416-B PIR sensor module. At first glance, it looks identical to the famous HC-SR501. In fact, for practical purposes, the HW-416-B shares the same core components: a Pyroelectric Infrared (PIR) sensor, a BIS0001 (or similar) signal processing IC, and an adjustable lens.

In this guide, we’ll cover everything you would find in a standard datasheet, plus tips for using it with Arduino, ESP32, or Raspberry Pi. hw-416-b pir sensor datasheet

  • Output: Digital (active HIGH) open-collector / push-pull optional
  • Output signal level: TTL/CMOS compatible (0 V LOW, VCC HIGH)
  • Response time: <1 s (typical response to moving target)
  • Warm-up time: 30–60 seconds for stable operation after power-up
  • Operating temperature: -20 °C to +60 °C
  • Humidity: 0%–95% RH non-condensing
  • Dimensions: PCB module approx. 32 × 24 × 18 mm (with lens); lens diameter/shape varies
  • Weight: ~6–12 g (module with lens)
  • Lens: Plastic Fresnel lens (interchangeable variants may be available)
  • Sensitivity adjustment: On-board potentiometer (where included) for sensitivity/threshold tuning
  • Time delay adjustment: On-board potentiometer or fixed timing (module variants exist)
  • Trigger mode: Single/digital pulse per detection; some modules support retrigger/hold options
  • Mounting: PCB holes for screws; suitable for enclosure mounting behind lens opening
  • Typical applications: Intrusion alarms, automatic lighting, energy-saving HVAC triggers, occupancy sensing, DIY electronics and microcontroller projects

    • The HW-416-B 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. The HW-416-B is one of the most popular

    This article serves as a complete HW-416-B PIR sensor datasheet, covering every technical detail you need: electrical characteristics, pin configuration, sensitivity adjustment, time delay settings, wiring diagrams, and troubleshooting tips. finding a consolidated