Features: Stay protects with this high sensitivity Carbon Monoxide detectors featuring real time digital display and 90+ voice alerts for fast danger notifications in homes, kitchens, or during travel. The portable, battery power CO Gas Monitor Alarm offers hassle without installation with 360 detection coverage and a auto test function for consistent reliability. Ideal for families, landlords, and frequent travel, this wireless CO detectors ensures round the clock safety with its strong ABS construction and easy to read interfaces. designs for homes kitchens, , camping trip, or garages, this small device monitors gas levels accurately while providing loud hearable warnings during critical CO concentration spikes. Prioritize safety with advanced sensors technology that detects CO changes instantly, complemented by low power consumption and replaceable batteries for uninterrupted defense . Specifications: Material: ABS Size: about 10x10cm/3.93x3.93inch Package Includes: 1xCO Gas detectors Or 3xCO Gas detectors note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.