This module quickly detects alcohol concentration in exhaled breath. It communicates with the host via UART and outputs data digitally. After power-on or reset, the module completes initialization in approximately 600ms and enters normal operating mode (DC-DC disabled by default), ready to receive commands.
The module supports the following control features:
- Sleep Mode: Puts the module into a low-power state, suitable for long standby periods.
- Reset Function: Reboots the module, equivalent to a power cycle, returning it to its initial state.
Additionally, the module features a built-in NTC temperature sensor for automatic compensation under varying environmental temperatures, enhancing accuracy and stability.
Usage Instructions
This product is factory-calibrated and ready to use out of the box.
Before powering on, please ensure correct polarity when connecting the power supply to avoid damaging the module.
1. Place the module in a clean environment, free from alcohol vapors.
2. After powering on or resetting, the module completes initialization within approximately 600ms and enters normal operation.
3. Send the “Enable DC-DC” command from the host.
4. Read the BrAC value via the UART interface.
5. The module will automatically convert the BrAC value to the corresponding blood alcohol concentration (BAC).
⬥ For more details, please refer to the “Communication Protocol” section in the datasheet.
