Wristband Anti Lost Alarm Device SOS Wrist Panic Button DP-24A Product Description Product Description The wireless Watch Panic alarm button is wireless remote controller with signal button, alarm accessory. It is widely used in professional security & protection alarm system and matched with master unit. In an emergency or SOS, press the button for help, the main unit will alarm immediately. It is also suitable for usage in the fields of industrial control. It will send RF signal to the wireless RF receiver once be triggered. With crystal oscillator technology design, it is of steady frequency. It is easy operation and installation. Featured Wristband Anti Lost Alarm Device SOS Wrist Panic ButtonProvider: Beyond technology industrial Ltd Ideal for elderly home, retire center and hospital. Features: 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 Waterproof design,Green silicone strap material Specifications Working voltage: 6V DC cell battery Wireless frequency: 433MHz Learning code Transmission range: 60 to 100m in open air Working current: <15mA Static current: <5uA Low power consumption