1. Electrochemical sensing technology, high sensitivity and high detection. 2 .Digital display of the concentration of toxic gases, acoustical-optic alarm alarm. 3 .Using chip control technology, saving . 4 .Small size, exquisite industrial design.
Working voltage: 1.5V x 3=4.5V (3 AAA batteries not included ) Static current: 20uA Working humidity: relative humidity 15%-90% Digital tube display without voice sound and light alarm concentration value: 100PPM-199PPM (+ 50PPM) Digital tube display and continuous voice sound and light alarm concentration values: 200PPM and above (+ 50PPM) Wireless transmission frequency: 315MHZ/433MHz Wireless transmission distance: 300 meters (open)
1 x CO Detector 1 x English User Manual A package of screws