HC-SR501 HC SR501 Human Body Infrared Sensor Module PIR Motion Sensor Module Security Motion Switch Board 3-30V 5V 12V 2

1.RCWL-9196 integrates a 30V withstand low dropout LDO, the new module can work in the range of 3-30V

2.Amplify the part and discard cheap electrolytic capacitors and use ceramic chip capacitors, which have longer module life and better performance

3.The power supply adopts anti-reverse connection protection, which is safer to use

4.The sensor part adopts dual-unit high-performance pyroelectric probe

5.Professional processing chip RCWL-9196, the module has high sensitivity and high withstand voltage

Adopt professional demodulation chip RCWL-9196

Working voltage: 3-30V

Working current: 60μA

5-10M typical maximum distance

The power supply adopts anti-reverse connection protection

The variable resistor for sensitivity adjustment is factory set in the middle, the sensitivity is the middle value, and the general sensing distance is 5-8 meters. The variable resistance is rotated to the far right, and the sensitivity is the highest, which can reach 8-10 meters. The variable resistance is rotated to the far left, and the sensitivity is the lowest, which can reach 3-5 meters.

The variable resistor for time adjustment is factory set on the far left, and the delay after induction is the shortest, generally 2S. The variable resistor is rotated to the far right, and the time is the longest, about 200S.

There is an initialization time when the module is powered on, which is proportional to the setting time. Please refer to the application note for details.

1: Module default settings

The default delay time of the module is 2S, and the blocking time is 2S. The sensing distance is about 5 meters (room temperature is 25°C, and the human body is moving).

2: Power-on reset

When the module is powered on, there will be a reset process (power-on > output high level > output low level > work). The reset time is about 2-3 times of the delay time and blocking time. The module works normally after about 10-15S under default conditions. If the delay time is set to 30S, the module will work after about 1 minute.

3: Photosensitive control

(Optional, not set at the factory) Photosensitive control can be set, and it will not sense when the light is strong during the day.

4: Temperature compensation

(Optional, not set at the factory) In summer, when the ambient temperature rises above 30°C, the detection distance will be shortened, and temperature compensation can be used to compensate for certain performance.

Human body induction switch module X1