High quality & good price 315Mhz/433Mhz Wireless Emergency button/remote Panic SOS button for Security alarm system Product View More than 100 kinds models of remote control with good quality reasonable price,widely used in garage door ,rolling door , car alarm system ,home appliance,remote switch ,LED and other industral control . They are sold to Europe ,South America ,Japan and other world market..... Specifications 1.RF remote control with one button 2.chip:fixed/learning/rolling code; 3.Frequency: 315MHz/433MHz 4.Distance:<80m Main Feature 1,Emergency Button ,Panic button 2,Competitive price 3,Support OEM/ODM 4,Durable,stable