ZPH02.pdf 

http://git.rot13.org/?p=air‑quality;a=blob;f=zph02.pl;hb=HEAD 
Technical Parameters
Model ZPH02
 Working voltage range 5 +/‑ 0.2 V (DC)
 Output way Rate of low level%(recommending 30s)
 Output signal voltage 5 +/‑ 0.2 V
 Detection ability smallest particles 1 μm diameter
 Warm‑up time
 Working current
 Storage
 Humidity
 ≤1min(device warming‑up time)
 ≤90mA
 ≤95%RH
 range Working ≤95%RH
 Temperature
 range Storage
 Working ‑30 deg. C~50 deg. C
 0�C~50�C
 Size 59.5�44.5�20mm(L�W�H)
 Physical interface EH2.54‑5P
pinout

PIN No.	PMW mode	UART mode	
PIN1	GND	GND	
PIN2	NC	TXD	
PIN3	VCC	VCC	
PIN4	PWM	NC	

| PIN5 | NC | Connects to GND |