Carbon monoxide alarm detector, battery-powered CO alarm detector with LCD screen and voice warning

General Description: With this carbon monoxide detector, you can always detect the carbon monoxide concentration to ensure your safety and that of your family. This detector offers excellent safety, emitting an 85 dB audible alarm when it detects a buildup of smoke or carbon monoxide, instantly alerting those in danger. Technical Specifications: Package Weight: 106 g; Package Size: 10 x 10 x 3.8 cm; Alarm Concentration: 50 PPM (60-90 minutes), 100 PPM (10-40 minutes), 300 PPM (3 minutes); Power Supply: 3 AA batteries (not included); Audible Alarm: 85 dB