We've released the Seeed Gas Sensor Selection Guide, it will help you choose the gas sensor that best suits your needs.
The Grove - CO2 Sensor module is an infrared CO2 sensor high sensitivity and high resolution. Infrared CO2 sensor MH-Z16 Is a general-purpose, small sensors, the use of non-dispersive infrared (NDIR) Present in the principle of the air CO2 Detect, with good selectivity, oxygen- dependent, long life， built-in temperature sensor, temperature compensation ，with UART output, easy to use. It can be widely used in HVAC and indoor air quality monitoring, industrial process monitoring and security, agriculture and livestock production process monitoring.
IThe sensor value only reflects the approximated trend of gas concentration in a permissible error range, it DOES NOT represent the exact gas concentration. The detection of certain components in the air usually requires a more precise and costly instrument, which can not be done with a single gas sensor. If your projects aim to obtain the gas concentration at a very precise level, then we do not recommend this gas sensor.
|Dimensions||100mm x150mm x20mm|
|Measuring Range||0-2000 parts per million (PPM)|
|Resolution||1 PPM 0-2000 parts per million (PPM)|
|Warm up time||3 minutes|
|Operating Temperature||0 to 50℃|
|Operating Humidity||0% ~ 90% RH|
|Storage Temperature||- 20-60℃|
|Operating Voltage||4.5 V to 6 V DC|
|Maximum Current||100 mA|
|Average Current||≤50 ma|
|Grove - CO2 Sensor||1|
Grove - CO2 Sensor
Wiki of Grove - CO2 Sensor
Hi! My name is Carlos, from Spain. I'm working on this new project. Is based on mesure the street's Co2 levels and if is low turn on a green, then if reach a level turn on a yellow led and if it reach the maximum turn on a red led. Is ok for this? ThanksQuestion by: admin on 2018-12-18 02:30:30
Hello Carlos~ As far as I know, it will work. For more tech. infomation, please refer to our wiki in this page, or read the datasheet below. # https://raw.githubusercontent.com/SeeedDocument/Grove-CO2_Sensor/master/res/MH-Z16_CO2_datasheet_EN.pdf # RegardsAnswer by: admin on 2018-12-18 02:30:31
Hi, my name is Eric, I want to use the CO2 Sensor with an Arduino Mega board and the Grove Base Shield V2. The Mega has 5V Logic, so I'm putting the voltage switch on the base shield to 5V. But according to the Data sheet of the Sensor, the UART interface of the sensor can only take voltages from 0-3.3 V. Will the sensor be damaged by the 5V logic of the Mega Board? Regards, EricQuestion by: admin on 2018-12-18 02:20:56
Thanks for the fast reply! Page 4 of the english datasheet shows a table of the pinout of the sensor: Pad5: UART (RXD) 0-3.3V input digital. Has the sensor been tested with 5V logic at Pad5? Regards, EricAnswer by: admin on 2018-12-18 02:20:56