Gas Monitor 4 in 1 CO H2S O2 LEL Accurate Measurement Sound Light Vibration Alarm Backlit Display black

Feature: 1. [High Sensitivity] Equipped with a highly sensitive sensor, this gas monitor ensures accurate measurement with excellent repeatability and short response time. 2. [3 Alarm Mode] The gas detector features sound, light, and vibration alarms when detecting gases, allowing for prompt and effective notification. High and low concentration alarm values can be set. 3. [Multiple Charging Options] This gas tester is rechargeable and can be charged using USB from a computer, car, power bank, and other convenient methods. 4. [Backlit Display] The gas monitor has a high resolution backlit screen that provides clear readings day and night, ensuring visibility even under sunlight or low light conditions. 5. [Wide Application Range] This versa