Co CO sensor adopts imported sensor chip, which is used to detect the concentration of CO in various environments. It has the characteristics of high precision and good stability. Range: 0 ~ 1000ppm resolution: 1ppm power supply mode: DC12V / 24V wiring mode: voltage type: 3-wire, current type: 3-wire, RS-485 signal: 4-wire signal output: voltage type: 0 ~ 5V DC, current type: 4 ~ 20 mA RS-485 signal: support Modbus Protocol (baud rate 9600 can be set, address 0-255 can be set) response time: < 20s, measurement stability time: 30s, sensor type: electrochemical