The is a compact Passive Infrared (PIR) motion sensor module, frequently used as a direct, higher-quality alternative to the common HC-SR501. It uses the BISS0001 IC to process infrared signals into a digital output, offering better thermal stability and noise resistance than standard budget clones. Core Specifications PIR Motion Sensor: How It Works + Arduino Project - Zbotic
11 Mar 2026 — Supply voltage: 4.5V to 20V DC. Output voltage: 3.3V HIGH / 0V LOW (compatible with 3.3V and 5V microcontrollers) Detection range: Go to product viewer dialog for this item. PIR Motion Sensor HC-SR501
Since there isn't a widely distributed commercial component specifically labeled "HW416B" in major component databases (it is likely a house-marked version of a generic PIR module, similar to the HC-SR501 or SR602, or a typo for the HW-416 relay module), this review focuses on the most probable candidate: generic compact PIR sensor modules often found under similar part numbers on Amazon, AliExpress, and electronics kits.
If you are looking for a PIR sensor "better" than the standard bulky blue boards (like the HC-SR501), here is a review of what you are likely looking at.
The HW416B outputs 3.3V, which is safe for 5V Arduinos, but 5V logic can damage 3.3V-only boards. To be better safe than sorry:
The HW-416B is a cheap ($1.50) clone that works okay, but it is strictly inferior to the original HC-SR501 due to the 3.3V output and longer dead time. If you are building a battery-powered project, skip this. If you are building a bench light switch, it is fine.
Have you fried an HW-416B by plugging it into 12V? Tell us your horror story in the comments.
Did we miss a spec? Download our printable PDF pinout card in the link below.
(often identified as a high-performance version of the HC-SR501) is a widely used passive infrared (PIR) motion sensor module. It operates by detecting infrared radiation changes from moving objects like humans or pets. Tayda Electronics Key Technical Specifications HC-SR501 PIR motion sensor - Handson Technology hw416b pir sensor datasheet better
If you can show a photo of the module’s back side (chip markings), I can identify its actual PIR controller chip (BISS0001 or similar) and give you the real corresponding datasheet.
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Suggested post body: "Hi — I have an HW416B PIR motion sensor but can't find an official datasheet. I need: operating voltage, output type (active high/low), sensitivity/range, timing (retrigger/hold) and pinout. If anyone has a datasheet or test measurements, please share. Also welcome recommendations for better-documented replacement PIR modules compatible with 3.3–5V microcontrollers."
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The HW-416B PIR Motion Sensor is a high-quality, adjustable module widely regarded as a reliable alternative or "clone" of the standard Go to product viewer dialog for this item.
. While "HW-416B" often appears as a specific product code from certain manufacturers (like Popular Electronics ), its technical performance is virtually identical to the , often featuring slightly tighter component tolerances. Key Performance Specifications The is a compact Passive Infrared (PIR) motion
Operating Voltage: 4.5V to 20V DC, making it highly compatible with 5V logic systems like Arduino and Raspberry Pi.
Detection Range: Adjustable from 3 to 7 meters using an onboard potentiometer. Detection Angle: Approximately 100° to 120° cone angle.
Delay Time: Adjustable from 5 seconds to 5 minutes (300 seconds) via a second potentiometer.
Power Consumption: Extremely low static current (<50 µA), ideal for battery-powered IoT applications. Expert & User Review Highlights Reliability: Experts from AliExpress Wiki note that the
often exhibits better thermal stability than generic budget clones, showing fewer false triggers when exposed to HVAC airflow.
Ease of Integration: It features a simple three-pin interface (VCC, OUT, GND) that outputs a 3.3V TTL signal, eliminating the need for complex level shifting.
Versatile Trigger Modes: Includes a jumper to switch between L (non-repeatable trigger) and H (repeatable/re-triggerable) modes, allowing you to customize how it responds to continuous movement.
Setup Tip: Users recommend mounting the sensor at least 2 meters high and avoiding placement near heat sources or direct sunlight to prevent false positives. Comparison with Alternatives Panasonic EKMB1 Go to product viewer dialog for this item. SparkFun Mini (STHS34PF80) Go to product viewer dialog for this item. DIY, Prototyping, Low-cost Industrial, Ultra-low power High-precision presence detection 2 µA 3–7m (Adjustable) 5m (Fixed) 4m (Fixed) Adjustability Potentiometers (Manual) Adjustability Adjustability Software-controlled (I2C) PIR Motion Sensor Detector Module HC-SR501 - SunRobotics Use a simple voltage divider: OUT pin → 2
The HW-416B has two small yellow jumpers and three pins labeled L and H.
Pro tip: Set it to H for debugging, otherwise you will think the sensor is broken because it ignores you for 30 seconds after the first wave.
You don’t need an Arduino to verify your HW-416B works. Here’s a 30-second test:
Walk in front of it. The LED lights up. That’s your “datasheet.”
Posted by: TechRecipes Staff Difficulty: Beginner
If you bought a bundle of "HW-416B" PIR sensors from Amazon, AliExpress, or a starter kit, you probably noticed something frustrating: There is no official datasheet.
Why? Because the HW-416B is functionally a clone of the classic HC-SR501. However, the HW-416B has specific quirks regarding voltage and timing. After benching three different batches, here is the better datasheet you actually need.
Jumper (L / H)
Time potentiometer (usually labeled TIME)
Sensitivity potentiometer (usually labeled SENS)