Kitchen Bedroom Carbon Monoxide Warning Detector Alarm 4 Digits LCD Displayer

Descriptions: Kitchen Bedroom Carbon Monoxide Warning Detector Alarm, a perfect item for protecting your family from the dangers of carbon monoxide Advanced level of protection, easy to read with the digital display, even in low light conditions. Specifications: Sensitivity/Alarm Time: Within 60~90 minutes at 50ppm CO concentration; Within 10~40 minutes at 100ppm CO concentration; Within 3 minutes at 300ppm CO concentration LCD Displayer (optional): 4 digits LCD displayer Audibility: 85dB ( at 1m distance ) Frequency 3 - 0.5KHZ Standby Current: