Import H2s-A1 Hydrogen Sulfide Sensor (H2s Sensor) — Buy in wholesale FOB from Supplier in China

The H2S-A1 hydrogen sulfide sensor is a fuel‑cell based detector supplied by Week Technology Ltd. in China. It has a compact 20 mm diameter form factor that matches the industry standard for portable gas detectors. The sensor operates across a concentration range up to 100 ppm H₂S, delivering stable readings from parts‑per‑billion to 1 % levels. Its design includes factory calibration for immediate deployment.

Performance specifications include a sensitivity of 550‑875 nA per ppm at the 20 ppm point, a response time (t90) of less than 35 s to reach 20 ppm, and a resolution better than 0.05 ppm equivalent RMS noise. The device functions reliably between - 30 °C and 50 °C, tolerates ambient pressures of 80‑120 kPa, and operates under humidity conditions of 15‑90 % RH. These parameters align with typical requirements for continuous monitoring in petrochemical and refinery environments. Typical power consumption for similar sensors is around 20 mA, and a service life of about five years is common.

The sensor is intended for industrial safety systems, gas detection units and environmental monitoring stations, making it valuable to plant operators, safety engineers and OEM integrators. Week Technology Ltd. offers the sensor with a matched 4‑20 mA digital transmitter board, providing both digital and analog outputs. While the listing does not disclose MOQ, lead‑time or specific certifications, buyers should request IEC‑type approval and a calibration certificate. Confirm Incoterms and payment terms directly with the supplier before finalising the purchase.

Week Technology Ltd. is based at 16th Floor, Building #3, Zhongke Mansion, Shenzhen 518067, Guangdong, China. The supplier is classified as an imported tier with a harbor trust tier, indicating suitability for cross‑border trade. Platform metrics show a 0 % response rate and no average response time, suggesting limited communication activity on the listing. No additional corporate background or certifications are provided beyond the product details.

The company markets the H2S‑A1 sensor together with a matched 4‑20 mA digital transmitter board, highlighting factory calibration and built‑in temperature compensation. The listing notes that the sensor offers both digital and analog outputs and can operate in biased or unbiased modes. Specific lead‑time, MOQ or certification documents are not disclosed, so prospective buyers should request these directly. Week Technology Ltd. focuses on supplying fuel‑cell gas sensors for industrial safety applications.