Portable 4 Gas Detector The product is based on the color or size of the main image of the product page. 4 in 1 gas detector, with o, visual, and vibration three alarm methods to alert when preset levels are reached. Compact size with back stainless steel clip design, comes with high-gradeengineering plastic storage box to provide all-around protection. Features: Handheld 4 in 1 gas detector with high quality gas sensor, excellent sensitivity and repeatability. With o, visual, and vibration three alarm methods to alert when preset levels are reached. IP65 protection level. High-strength engineering housing to prevent splash, dust and explosion. Comes with high-grade PPT engineering plastic storage box, anti-drop and shockproof to provide all-around protection. Backlit LCD display with clear font to show the gas concentration of H2S, O2, CO and EX. Compact size with back stainless steel clip design, convenient for user to carry around. Specifications: Material: ABS Color: Black / Orange (Optional) Detect Gas Type: EX, H2S, CO, O2 Display Error: ?±5%FS Appearance Time: T