The Fresnel lens (the white plastic dome) must remain unobstructed. If mounting in a box, ensure the dome protrudes through a cutout.
Flip the module over to locate two small, adjustable potentiometers:
| Feature | HW-416-B | HC-SR501 | |---------|----------|----------| | PCB Color | Red | Blue | | Voltage | 4.5V – 20V | 4.5V – 20V | | Delay range | 0.3s – 600s | 0.3s – 600s | | Block time | ~2.5s | ~2.5s | | Trigger jumper | Yes (H/L) | Yes (H/L) | | Dimensions | 32×24 mm | 32×24 mm | hw-416-b pir sensor datasheet
The HW-416-B is a compact, highly efficient Pyroelectric Infrared (PIR) motion sensor module widely used in DIY electronics, security systems, and automated lighting projects. This guide provides a comprehensive technical overview, operational details, and practical implementation strategies for the HW-416-B module. 1. Technical Specifications and Datasheet
Explain how to to control high-voltage lights. Compare this model with the mini PIR sensor (AM312) . Let me know how you'd like to proceed with your project . PIR Sensor Datasheet, Pinout Specifications, Working The Fresnel lens (the white plastic dome) must
: To prevent false triggers, do not place the sensor directly facing air conditioners, heaters, or direct sunlight.
Digital output pin. Outputs 3.3V TTL High when motion is detected; outputs 0V Low when idle. GND: Ground connection. Connect to the system ground. Onboard Adjustments (Potentiometers and Jumpers) Compare this model with the mini PIR sensor (AM312)
: The sensor is optimized to detect motion frequencies between 0.7 Hz and 30 Hz.
Motion detection is a foundational element of modern automation, security systems, and smart home technology. Among the various tools available to hobbyists and engineers alike, Passive Infrared (PIR) sensors are the most popular for detecting human presence. While many are familiar with the classic HC-SR501, the has emerged as a highly reliable, compact, and efficient alternative.