This sensor builds on the photoacoustic sensing principle. Sensor board is equipped with an I2C interface.
The Sensirion SCD40 sensor determines the level of carbon dioxide according to the newly developed photoacoustic technology.The board with the sensor is adapted for connection to the I2C interface and has resistors and jumpers to enable the pull-up of the bus to 3.3V
The MH-Z19C sensor uses the principle of insolvenous infrared (NDIR) to detect CO2 concentration in the air. The sensor is characterized by good selectivity and works regardless of oxygen. It has built -in temperature compensation and sends data through UART or PWM output.
Intelligent Infrared Gas Module MH-Z16 with I2C/UART Interface Adaptor for LK3
CO2 MH -Z19 sensor - version with soldered Goldpins. New product - warehouse sale from shopping at old prices!