Model   No.MH-Z19B
Detection GasCO2
Working voltage4.5   ~ 5.5 V DC
Average current<   20mA (@5V power supply)
Peak current150mA   (@5V power supply)
Interface level3.3   V (Compatible with 5V)
Detection Range0~2000/5000/10000ppm(optional)
Output signalSerial   Port (UART) (TTL level 3.3V)
PWM
Preheat time3   min
Response TimeT90 < 120 s
Working temperature-10   ~ 50 ℃
Working humidity0   ~ 95% RH (No condensation)
Weight5   g
Lifespan>   5 years


PinPin Definition
VinPositive   pole of power (Vin)
GNDNegative   pole of power (GND)
PWMPWM
HdHD(zero   point calibration, low level
    lasting for over 7s is effective)
RxUART(RXD)TTL   Level data input
TxUART(TXD)TTL   Level data output
Voreserved
SRreserved
AOTreserved



After sale instructions

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