1.The radar part is equipped with the S3KM111L chip of Sidian Micro. S3KM111L is an integration based on FMCW radar technology,Single chip single wave sensor SoC. Operates in 24 GHz k band with up to 1 GHz modulation bandwidth per frequency. 2.use FMCW frequency modulated continuous wave to detect the target in the set space. Combined with radar signal processing, accurate human body induction Algorithm to realize the high sensitivity of human presence state induction, recognition of human body in motion and static state. 3.The Wi-Fi&BLE part uses the BL602 chip as the core processor and supports the Wi-Fi 802.11b/g protocol and BLE 5.0 Protocol. The BL602 chip is built with a low-power 32-bit RISC CPU, 276KB of RAM and a rich bundle of peripheral interfaces,These include SPI, UART, I2C, PWM, ADC and GPIO. 4.The Rd-01 module can sense whether there is a moving or twitching human body in the area, and transmits the detection junction in real time through Wi-Fi&BLE Fruit. Provides visual configuration tools to easily configure sensing range, sensitivity of different intervals, and unmanned Delay time, etc. It also supports Wi-Fi&BLE wireless configuration of radar parameters, greatly improving the efficiency of construction and operation Rate, convenient and fast. Colour:black Material:ABS Package Contents: 1 x Human body sensor module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.