The sensor can be triggered by rapid temperature changes, sunlight, or small animals.
After the output goes LOW, the sensor locks itself for roughly 2.5 seconds to prevent self-triggering from minor ambient changes. It will ignore all movement during this time.
If motion is detected while the output is already high, the "delay timer" restarts. The output stays high as long as there is continuous movement. 5. Typical Applications
Sunlight can overload the pyroelectric element despite the filter properties of the plastic Fresnel lens.
3.3V TTL High/Low (High when motion is detected). hw-416-b pir sensor datasheet
: The sensor is optimized to detect motion frequencies between 0.7 Hz and 30 Hz.
Arduino (through a 220Ω resistor) to act as a visual alarm indicator. 6. Arduino Example Code
The HW-416-B uses a simple three-pin interface (VCC, OUT, GND), but also features a four-pin configuration header that allows advanced options.
The output goes High when motion is detected and stays High for the set delay duration, ignoring subsequent motion during this window. The sensor can be triggered by rapid temperature
3 to 7 meters (Adjustable via onboard potentiometer)
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
, offering tight component tolerances for stable performance in varying temperatures. Specification DC 4.5V – 20V Static Current Output Level 3.3V (High) / 0V (Low) Detection Range Adjustable from 3m to 7m Detection Angle < 120° cone angle Delay Time Adjustable (approx. 0.3s to 5 minutes) Operating Temp -20°C to +80°C Pinout & Wiring HC-SR501 PIR MOTION DETECTOR
All matter with a temperature above absolute zero emits thermal energy in the form of infrared radiation. Human bodies radiate infrared light at a wavelength of roughly 9 to 10 micrometers. If motion is detected while the output is
Power input. Connect to a 5V supply line (compatible with 4.5V–20V).
Understanding the electrical and environmental limits of the HW-416-B is crucial for designing safe and long-lasting circuits. Specification 4.5V to 20V DC Can be powered by standard 5V or 12V rails Static Current Consumption < 50µA to 65µA Highly efficient for battery applications Output Signal Level High: 3.3V / Low: 0V Compatible with 3.3V and 5V microcontrollers Detection Distance Up to 3 to 7 meters Adjustable via onboard potentiometer (model dependent) Detection Angle < 100° to 120° cone Conical field of view shaped by the Fresnel lens Delay Time 0.5 seconds to 200 seconds Adjustable via onboard potentiometer Blockade Time 2.5 seconds Default blind period after output goes low Trigger Modes L (Non-repeatable) / H (Repeatable) Selected via jumper on the PCB Operating Temperature -15°C to +70°C Suitable for indoor and sheltered outdoor use PCB Dimensions Approx. 32mm x 24mm Standard standard PIR module footprint 3. Pinout and Hardware Configuration
When motion is detected, the output goes HIGH. After the delay time expires, the output automatically drops back to LOW, even if the target is still moving within the detection zone.