4-20mA current type ammonia tester
Type:KD2130M-NH3
RS485 interface carbon monoxide tester
Type:KD2130M-CO
RS485 interface dust tester
Type:KD2130M-PM25
4-20mA current type carbon dioxide tester
Type:KD2130M-CO2
4-20mA current type carbon dioxide tester
Type:KD2130M-CO2
4-20mA current type oxygen tester
Type:KD2130M-O2
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