Feature:1. Wireless help button system completely includes wireless button, host and sound light alarm.2. When someone has an emergency, press the button, the wireless button sends a signal to the host, the host sends a sound light alarm signal to the alarm, and the alarm sends out a highpitched alarm.3. One button can save the lifeline, pregnant women are uncomfortable, patients are sick, accidental falls.4. Wireless connection, strong penetrating power, no longer worry about not receiving the signal, no prompt.5. Wide usage, such as toilet, school, hospital, nursing home, nursing home and shopping mall.Specification:Item Type: Wireless Help Button SystemMaterial: ABSAlarm Parameters: Receiving Distance: Open Distance 100m or 109ydSound Size: 110DB or 30CMRated Current: 100MAFlash Frequency: 150 Times or MinuteEmergency Button Parameters:Working Frequency: 433MHzStandby Current: 0mAWorking Current: 18mAEncoding Method: Learning Code (EV1527 or Compatible Chip)Modulation Method: OOK (Amplitude Modulation)Reference Distance: Generally, It Can Reach 20-30m or 22-33yd in Use, and Many Influencing Factors are Subject to the TestWorking Temperature: -10-and70Use Range: Toilets, Schools, Hospitals, Nursing Homes, Nursing Homes, Shopping Malls.Package List:1 x Sound Light Alarm1 x Wireless Button1 x Power Adapter2 x Stickers1 x Screw Installation Package