Wide application and easy to carry: This multi-gas monitor comes with a beautiful silver casing, compact size and clip-on design. It's easy to use by simply attaching the clip to the cloth, always safe when working in confined spaces, and effectively projected to ensure a safe environment. High Sensitivity and Accurate Measurement: The portable 4-gas monitor is equipped with high-quality imported gas sensors, excellent sensitivity and excellent repeatability. Three Alarm Methods: The portable gas detector is ready to use, calibrated and equipped with adjustable audio, visual and vibration alarms that sound when preset levels are reached. Accurately measures gas concentration with easy reading. Waterproof, dustproof, explosion-proof, low error: detection error is better than or equal to 5%FS, response time: T is less than 30s. Zero and span calibration options. A 1800 mAh battery with sufficient capacity can work continuously for a long time. Size: 135x32x70mm Material: Plastic Color: Orange/Black Package Contents: 1 x Detector 1 x English Manual 1 x USB Cable Only the above package contents are included, other products are not included. Note: Light photography and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowance is +/-1-3cm.