Carbon Monoxide Threshold Alarm Sensor (0-1000ppm, 5-24V)
CO sensor with factory-fixed 20ppm alarm threshold, LED indicator, and digital high/low output (5–24V). Range covers 0–1000ppm; threshold is not user-adjustable.
Pinout
- V+
Positive DC supply input for the sold carbon-monoxide threshold alarm sensor. DFRobot states 5-24V DC operation.
Type · PowerVoltage · 5-24V DC - GND
Power and signal ground return for the sensor connection port/cable.
Type · GroundVoltage · 0V - OUT
Threshold alarm output signal. DFRobot specifies High=5-24V when CO exceeds the fixed 20ppm danger threshold and Low=0V when safe.
Type · GPIOVoltage · High=5-24V, Low=0V
| Pin | Type | Function | Voltage |
|---|---|---|---|
| V+ | Power | Positive DC supply input for the sold carbon-monoxide threshold alarm sensor. DFRobot states 5-24V DC operation. | 5-24V DC |
| GND | Ground | Power and signal ground return for the sensor connection port/cable. | 0V |
| OUT | GPIO | Threshold alarm output signal. DFRobot specifies High=5-24V when CO exceeds the fixed 20ppm danger threshold and Low=0V when safe. | High=5-24V, Low=0V |
Pin details
3 connections- V+
Positive DC supply input for the sold carbon-monoxide threshold alarm sensor. DFRobot states 5-24V DC operation.
PowerVoltage · 5-24V DC - GND
Power and signal ground return for the sensor connection port/cable.
GroundVoltage · 0V - OUT
Threshold alarm output signal. DFRobot specifies High=5-24V when CO exceeds the fixed 20ppm danger threshold and Low=0V when safe.
GPIOVoltage · High=5-24V, Low=0V
Start wiring
I2C · Analog · UART · 3.3 – 5 V · Breakout
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