Gas alarm detector

Model: HC-209

Technical Parameter
1.Working voltage:100-240AC
2.Use style: standalone or wired network or wireless network
3.Alarm range:
     Natural gas: 10% ~ 25% LEL
     Liquefied petroleum gas: 10% ~ 25% LEL
     Coal gas: 2% ~ 5% LEL
4.Response time: < 30 seconds
5.Alarm volumn: > 85 dB (between 1m)
6. Emission frequency: 315 /433 / 868 Mhz
7.Emission distance: open distance 120m
8.Sensitive parts life: 3 years
9.Working temperature: - 10 ℃ ~ 45 ℃
10.Humidity: 10% ~ 95% RH
11.Gas pressure: 86 ~ 106 kpa
12.Size: 120*80*40mm
13.Backup battery(optional): DC 9V alikaline battery(factory default: without battery)