Hw-416-b Pir Sensor Datasheet Jun 2026

Turn the PCB over to find the calibration pots and mode selection headers:

The HW-416-B features two potentiometers (yellow knobs) and one jumper for customizing behavior. 4.1 Sensitivity Adjustment (Potentiometer)

The HW-416-B features a straightforward 3-pin interface alongside calibration components on the back of the PCB. Pin Description Power input (Connect to 5V DC).

需要一篇关于“hw-416-b pir sensor datasheet”的长文。这个型号比较特殊，可能不是标准型号，得先确认它到底是什么规格。核心思路是全面搜索：先找它的基本参数，再查使用手册和源代码，还要看看供电、输出类型这些关键特性，以及常见的应用场景。这样几路并行搜索，能更快地拼凑出完整信息。出来了。型号确实不太常见，但有一篇名为“Hardware setup for 3.3V”的页面提到了HW-416的硬件设置，这是最直接的相关信息。还有一份西班牙语的规格说明，以及一些讨论HW-416-B问题的论坛帖子。另外，关于HC-SR501和BISS0001的搜索结果虽然型号不同，但很可能与HW-416系列有技术关联。现在需要打开这几个最关键的页面，看看里面有没有详细的技术参数、引脚定义和常见问题解答。页面信息很丰富。那个硬件设置页面详细解释了HW-416在3.3V和5V下的配置方式，还提到了配置引脚。商品页面列出了具体尺寸（32.6×24.3mm）和关键特性。论坛帖子记录了HW-416-B的异常触发问题及解决方案。现在需要把技术参数、使用方法和常见问题等几个核心模块的信息补全。下一步的搜索将聚焦于传感器的尺寸图、安装注意事项、BISS0001芯片的详细技术参数，以及更广泛的PIR传感器故障排查和编程示例。结果显示，HW-416系列与HC-SR501在硬件和规格上高度相似，可以借鉴后者的技术参数来补充。从打开的页面里，已经整理出了核心的电气参数、引脚定义、独特的双电压供电特性、可调节的触发模式，以及一些常见的故障排查信息。这些内容基本能构成一篇完整的技术文章了。回答就围绕这些关键点来组织，先从技术规格入手，再讲配置与使用，接着是故障排查和实际应用案例，最后做个总结。 HW-416-B PIR Sensor Datasheet: Complete Technical Reference & Integration Guide hw-416-b pir sensor datasheet

At dusk she powered up the lamp one last time, watching the sensor’s warm pulse feel across the room as she waved her hand. The LED obediently brightened, and for a moment the two of them—the maker and the module—were in a small, wordless conversation: numbers turned into function, specification into service. The datasheet lay on the bench, pages smoothed by use. It was, she thought, a little instruction manual for bringing still things to life.

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When motion is detected, the output goes HIGH. Even if the target keeps moving, the output drops to LOW once the delay timer expires. Turn the PCB over to find the calibration

The most interesting finding upon inspection is the controller chip. It is usually a "blob" of black epoxy (Chip-on-Board). Through reverse-engineering efforts by the open-source community, this chip has been identified as the (or BISS0001) generic infrared controller.

Fresnel Lens (White dome shielding the pyroelectric element) Hardware Layout and Pinout Configuration

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). It was, she thought, a little instruction manual

: The sensor outputs HIGH continuously with no motion present.

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.

What should react when motion is detected (e.g., a relay, a buzzer, an MQTT broker packet)? Are you designing a battery-powered system? Share public link

The is a standard Passive Infrared (PIR) motion sensor module, frequently used in DIY electronics projects with microcontrollers like Arduino, Raspberry Pi, and ESP32. It is essentially a variant of the widely documented HC-SR501 module. Technical Specifications Operating Voltage: typically 4.5V4.5 cap V 12V12 cap V Output Signal: Digital HIGH ( 3.3V3.3 cap V ) when motion is detected; Digital LOW ( ) when idle. Detection Range: Adjustable up to meters (approx. Detection Angle: Approximately 110∘110 raised to the composed with power Quiescent Current: Extremely low, often less than Time Delay: Adjustable from approx. seconds to seconds via on-board potentiometer. Pinout and Connections

PIR sensors are sensitive to power supply noise. If your DC rail drops or fluctuates under load (e.g., when a relay clicks on), add a