Product Feature ENSURE SAFETY, PROTECT LIVES: Elevate security with the GOYOJO Gas Leak Detector, a comprehensive 4-in-1 monitor for H2S, EX, O2, and CO gases. Covering a detection range of H2S (0-1000 PPM), EX (0-500 PPM), O2 (0-100% LEL), and CO (0-30% VOL), this device is a must-have for your home or workplace. SWIFT ALERTS, RELIABLE RESPONSE: Gain peace of mind with instant notifications from advanced sensors. Offering a response time of less than 30 seconds, this detector ensures timely awareness in critical situations, backed by precise measurements.   Engineered to thrive in temperatures from 14°F to 131°F, this home safety monitor gas leak detector is your steadfast companion for durability and security. Safeguard your surroundings by adding it to your cart now. VERSATILE GAS DETECTION SOLUTION: Detect combustible gases, carbon monoxide, hydrogen sulfide, and oxygen levels using a single, adaptable device.   SMART, SUSTAINABLE POWER: Stay environmentally conscious with its rechargeable battery and USB charging capability. The 1800mAh lithium battery provides extended operation, allowing you to monitor continuously. Embrace convenience, save on batteries, and stay protected with the GOYOJO Gas Leak Detector. SEAMLESS DATA ACCESS, EASY MONITORING: Effortlessly read gas concentration data on the LCD screen with adjustable backlight. Providing real-time readings, over-limit alerts, and low battery indications, it keeps you informed at a glance. Maintain control over your environment's safety with this user-centric tool. PERSONALIZE YOUR SAFETY SETUP: Tailor alerts, notifications, and settings to your surroundings, ensuring a custom safety experience. Sized at 133 x 67 x 30mm and weighing 205g, the GOYOJO Gas Leak Detector is compact and lightweight for easy portability. Elevate your safety toolkit and confidently guard your surroundings with this indispensable device.