The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino ESP32, and RASPBERRY PI. The easy-to-use Gravity interface, coupled with our sample code, can quickly build a hydrogen concentration detector.
DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF, which are used in exactly the same way and data format, so you can combine them according to your needs.
Features
Factory calibrated, accurate measurement
High sensitivity, low power consumption
Excellent stability and anti-interference
Three output modes: I2C, UART and analog
Long service life(2 years)
Compatible with 3.3~5.5V main controllers
32 modifiable I2C addresses
Reverse connection protection
Temperature compensation
Threshold alarm
It use I2C, UART and analog communication protocol to make smooth commutation between sensor and micro-controller.
| Serial Protocol | Synchronous/ Asynchronous | Type | Duplex | Data transfer rate(kbps) |
| UART | Asynchronous | peer-to-peer | Full-duplex | 20 |
| I2C | Synchronous | multi-master | Half-duplex | 3400 |
Specification
| Detection Gas | Hydrogen (H2) |
| Detection range | 0~1000ppm |
| Working Voltage | 3.3～5.5V DC |
| Working Current | ＜5mA |
| Output Signal | I2C, UART (0~3V), analog voltage |
| Working Temperature | -20～50℃ |
| Working Humidity | 15～90%RH (non-condensing) |
| Storage Temperature | -20～50℃ |
| Communication Protocol | I2C, UART and analog |
| Compatibility | Arduino, ESP32, Raspberry pi |
| Storage Humidity | 15～90%RH (non-condensing) |
| Lifespan | >2 years (in the air) |
| Adapter Plate Size | 37 x 32mm |
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