Hw-416-b Pir Sensor Datasheet -

HW-416-B PIR Sensor Datasheet: Pinout, Specifications, and Application Guide

Introduction

The HW-416-B is one of the most popular and cost-effective Passive Infrared (PIR) motion sensor modules available in the electronics market. Often found in Arduino starter kits, security lighting projects, and automatic door systems, this module is frequently compared to its predecessor, the HC-SR501. However, the HW-416-B offers distinct advantages in terms of size, power consumption, and adjustability.

. It is designed to detect motion by sensing changes in infrared radiation emitted by objects like human bodies. Key Technical Specifications Based on documentation from Tayda Electronics Popular Electronic hw-416-b pir sensor datasheet

Keywords: hw-416-b pir sensor datasheet, HW-416-B pinout, PIR motion sensor module, HC-SR501 vs HW-416-B, BISS0001 datasheet, Arduino PIR wiring. PCB: 32 (L) × 24 (W) Height (including

Delay Time: Fixed at approximately 2 seconds (non-adjustable). Detection Range: Up to 3–5 meters. Detection Angle: Approximately 100∘100 raised to the composed with power Operating Temperature: Pinout Configuration L (Non-Retriggerable): The sensor triggers, runs the timer,

11. Physical Dimensions (mm)

• PCB: 32 (L) × 24 (W)
• Height (including lens): 28
• Mounting holes: Two 3mm holes (center-to-center distance 28mm)
• Pin header spacing: 2.54mm (standard 0.1")

• L (Non-Retriggerable): The sensor triggers, runs the timer, and ignores any new movement during that time. It must reset before it can trigger again. This is terrible for security lights (the light turns off even if you are dancing in front of it).
• H (Retriggerable): The sensor triggers. If it detects movement while the timer is running, the timer resets. This is the default behavior most people expect, but the module often ships in 'L' mode by default, causing user frustration.

Some variants include a fourth pin (low-power mode or temperature compensation), but the HW-416-B is almost always 3-pin.

Limitations & cautions

• No directional/velocity measurement—only motion presence via thermal change.
• Susceptible to sudden environmental temperature shifts, drafts, and moving heat sources (e.g., HVAC vents).
• False positives possible from direct sunlight, heating pipes, or moving curtains.
• Performance degraded through glass or behind insulating materials; IR-transparent openings required.

Warm-up Period: The sensor needs about 30 to 60 seconds to "learn" the infrared signature of the room after powering on. Expect false triggers during this time.