Dart Sensors WZ-S Formaldehyde (HCHO) Gas Sensor Module - UART Output, 0.03-2ppm Range

The WZ-S module provides a digital UART (serial) output. To connect it to an Arduino, you would link the module's TX pin to an RX pin on the Arduino (e.g., SoftwareSerial on pins 10 & 11) and the RX pin to an Arduino TX pin. Ensure both devices share a common ground and you power the module within its 5-7V DC input range, which can be supplied from the Arduino's 5V pin.

No, the Dart Sensors WZ-S module is factory pre-calibrated for formaldehyde detection and is ready for immediate integration into your system. The digital UART output provides direct PPM values, eliminating the need for analog signal conditioning or user calibration under standard operating conditions.

T90 response time (less than 40 seconds) is the time the sensor takes to reach 90% of its final stable reading when exposed to a target gas. T10 recovery time (less than 60 seconds) is the time it takes for the sensor reading to fall to 10% of its peak value after the gas source is removed. These metrics indicate the sensor's speed in tracking dynamic concentration changes.

The WZ-S is primarily designed for indoor air quality applications. Its specified operating temperature range is 20°C to 50°C, which may not cover all outdoor environmental conditions. For outdoor use, the module must be housed in a protective, weatherproof enclosure that maintains the internal temperature within its operating limits and protects it from direct moisture and contaminants.