Honeywell CRIR M1 User Manual page 2

COMMERCIAL CARBON DIOXIDE SENSOR, 400 PPM TO
2000 PPM (UP TO 10000 PPM EXTENDED RANGE),
FIGURE 1. ALARM STATE DIAGRAM
FIGURE 2. MOUNTING DIMENSIONS (FOR REFERENCE ONLY: MM)
2,50
4,50
1
2
3
4
5
8,02
4,50
16,50
7,10
8,70
2,50
1,00
8,50
2,50
2,54
10,16
2 Sensing and Internet of Things
Alarm state open
CO
33,00
2,50
7 , 00
9
8
7
5,19 dia.
6
Center of gas inlet holes.
Label
0,64
2,54
29,70
CRIR M1
concentration (ppm)
2
22,00
4,50
0,64
7,62
Issue 1
000842
TABLE 2. PINOUT
PIN
FUNCTION
NUMBER
1 bCAL_in/CAL_in
2 UART_R/T
3 UART_TXD
4 UART_RXD
5 DVCC_out (3.3 V)
6 Vin_(4.5 V to 5.5 V)
7 GND
8 Alarm output
9 PWM output