natural gas leak detector KS-715NR-AC Wireless Gas Detector

Operating voltage: 220V AC;  Wall mounted;
Alarm output: Sound&Flash alarm; Wireless transmission;
Sending frequency: 433MHz/315MHz 
Alarm level: 10% ±5% LEL.
Auto reset;
High Reliability sensor;
MCU processing adopted,SMT adopted,good stability
Malfunction auto-check indicator
http://www.karassnsecurity.com