D9 PM2.5 Laser Dust Particle Sensor Module Detects PM

D9 PM2.5 Laser Dust Particle Sensor Module Detects PM Description

Zero false alarm rate, Real-time response
Correct data
Minimum distinguishable particle diameter:0.3 micrometer
High anti-interference performance because of the patent structure of six sides shielding
Optional direction of air inlet and outlet in order to adapt the different design

Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you!
PIN1: VCC power supply 5V
PIN2: GND power ground
PIN3: NC NC
PIN4: RXD:Serial port receiving pin (3 3V level)
PIN5: TXD serial port sending pin (3 3V level)
PIN6: RESET is suspended during use. Lowering cause the module to malfunction.
PIN7: NC NC
PIN8: PWM PWM pulse width signal output pin (3 3V level)
Circuit design should pay attention to
1) D9 requires 5V power supply because the fan requires 5V drive. But other data communication and control pins require 3.3V as the high level. Therefore, the main board MCU connected to it for communication should be powered by 3.3V. If the motherboard MCU is powered by 5V, the communication lines (RXD, TXD) and A level conversion chip or circuit should be added to the control line (SET, RESET).
2) The serial output only needs to be connected to PIN1, PIN2, PIN5, and other PIN pins do not need to be connected.
3) PWM output only needs to be connected to PIN1, PIN2, PIN8, and other PIN pins do not need to be connected
Colour:Silver
Material:Metal

Package Contents:
1 * 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.