jenix Security System Remote Operated SOS Panic Button Call Bell with Loud Siren Home Sound Alarm JXPB110 
Designed for Old Age People safety : Comes with 2 Remote as Panic button /Call Bell , one button work as call bell , one button work as SOS 
100 Meter Wireless Zone : Press Remote Button with in range of 100 meter from Any where Loud Siren Will start enough sound in 300 meter area 
110dB Sound : Super Loud sound siren with piercing hooter , sound can travel in 300 meter diameter of circle 
Comes Along with 12V Adaptor so just plug in Power and Use , Best Application Area - Jewelry Shop, Normal Shop , Home, Field 
Easy operation : can be used as remote door bell , wireless Panic Button (as long as keep press Siren remain ON) , as SOS button ( as soon as press second button Siren Remain On until you Off it by pressing other button, Can be used as Long Distance ( 200 Feet) Wireless Call Bell