Winsen ZE03-NH3 Ammonia Gas Sensor Module - 0-50 ppm, 0.01 ppm Resolution, UART/Analog Output

The module operates from a DC power supply between 3.7V and 9V. This wide range allows for flexibility, supporting direct connection to common 5V microcontroller boards or regulated battery packs. Ensure your power source can provide a stable voltage within this range for optimal performance.

The module provides two output options: a UART serial interface (3V TTL logic level) for digital communication and a direct analog voltage output. The UART interface allows for easy command-based reading and configuration, while the analog output provides a simple voltage proportional to the gas concentration for basic monitoring.

For Arduino, connect the module's UART TX/RX pins to a software serial port or a hardware serial port via a logic level converter if your Arduino is 5V. For the analog output, connect it directly to an analog input pin. For Raspberry Pi, use the UART interface via the GPIO header, ensuring logic level matching (3.3V), or use an external ADC for the analog signal.

The electrochemical sensing element has a typical operational life exceeding one year under normal continuous use within its specified environmental conditions (0-50°C, 20-90% RH). Lifespan can be affected by exposure to high concentrations of the target gas or contaminants, so periodic performance verification is recommended for critical applications.

Yes, the Winsen ZE03-NH3 module is factory calibrated for ammonia detection. Upon power-up, the sensor requires a brief stabilization period, typically a few minutes, to output accurate and stable readings. For the most precise measurements, allow the sensor to acclimate to the ambient environment before taking critical data.