emergency sos alarm Brand New Wireless Panic Button Emergency Help For Alarm System

emergency sos alarm,life sos alarm,manual emergency alarm,panic button for gsm alarm system    wrist watch systle panic button   Feature:   Can compatible with all our alarm host   Can be worn on the wrist like a watch   Permanently sealed-in lithium battery   Battery operated with life expectancy of >1 year in a typical domestic environment   Ultra low power consumption.   Choice of lanyard, black elastic wristband, or velcro wristband   Low battery detection      Technical parameter:   Power: lithium C1620   Battery life: >1 year   Radio frequency available: 315/433MHz   Range: 80 meters in open space   Operating temperature: -20 ~ + 50c   Humidity: up to 95% non-condensing   Dimensions: 43 x 31 x 12mm.     This kind Wrist Emergency button (sos Panic Button) is a very useful device for asking for help while happening unexpected incidents. Just push it then it is send wireless signal to the alarm panel.