Parallax USA Universal Gas Sensor Board

The Gas Sensor Board is designed to work in conjunction with one of the gas sensors listed below (not included) allowing you to determine when a preset gas level has been reached or exceeded.

• CO (Carbon Monoxide) Gas Sensor
• CH4 (Methane) Gas Sensor
• LPG (Propane) Gas Sensor
• C2H5OH (Alcohol) Gas Sensor

The gas sensor simply plugs into the Gas Sensor Board, making it easy to use these sensors in embedded projects. The board can interface to a microcontroller with only two I/O pins, allowing the sensor to be controlled and monitored automatically.

Key Features:

• SIP header interface with 0.1" spacing for easy connection to prototyping boards or extension cables  
• Controllable internal heater facilitates accurate measurements  
• Low-power standby mode reduces power usage for embedded projects
• Only two microcontroller I/O pins required for operation
• Voltage requirements: 5 VDC
• Current requirements: ~165mA (heater on), ~60mA (heater off)
• Interface: 1 TTL compatible input (HSW); 1 TTL compatible output (ALR)
• Dimensions: 1.50 x 1.0 x 1.0 in (38.1 x 25.4 x 25.4 mm)
• Operating temp range: 14 to 122 °F (-10 to +50°C)

Application Ideas:

• Gas level over-limit alarm
• Stand-alone/background sensing device
• Environmental monitoring equipment