GH-718 Human Body Infrared Detection Module For Including Human - inductive Lamps Security Alarm Devices

Key Features:

1. Adopts pyroelectric sensor and Fresnel lens, which can accurately capture the infrared radiation changes emitted by the human body and realize high - sensitivity motion detection.
2. Features ultra - low quiescent current (less than 50 μA), which is energy - saving and suitable for battery - powered devices, effectively extending the service life of the power supply.
3. Supports photosensitive control function (optional). When enabled, the module will not trigger induction during the day or in strong light environments, which can reduce false triggers and improve operational stability.
4. The small - size PCB design is compact and easy to integrate into various electronic devices and circuits without occupying much installation space.
5. It has a simple working principle and interface. It only needs to be connected to power supply and signal terminals, and can be easily matched with microcontrollers or DC loads for use.

Working Principle:

The module detects changes in infrared rays emitted by the human body through a pyroelectric sensor. When a human body enters the detection range, the module outputs a high level; after the human body leaves, the module automatically delays and turns off the high level, and then outputs a low level. If it is set to the repeatable trigger mode, when the human body moves within the detection range during the delay period, the high - level output will be maintained until the human body leaves and then the level will be switched after the delay.

Typical Applications:

It is widely used in scenarios requiring human motion detection and automatic control, including human - inductive lamps, security alarm devices, induction toys, industrial automatic control equipment, smart doorbells, automatic flushing devices, and small household appliances that need to be triggered by human motion.