Material Plastic Brand No Color White Quantity 1 Power Supply 4.5V Remote Controlled distance 3 Meters Voice Decibels 85dB Battery Type 3 x AA batteries (included) Certification CE Other Sensitivity/alarm time: Within 60 to 90 minutes at 50ppm CO concentration; Within 10 to 40 minutes at 100ppm CO concentration; Within 3 minutes at 300ppm CO concentration; Red Led quickly flashes 4 times with unit chirping every 5 seconds then repeat; Working temp: 5~40 centigrade; Relative humidity: 20~90% Packing List 1 x Carbon monoxide detector 2 x Installation screws 2 x Installation corks 1 x English user manual 3 x AA batteries