Wireless 433MHz RC10 Elderly Distress Button SOS Emergency Distress Alarm Switch Button EmergThe product is shipped based on the color or size of the main image of the product page, if you have special requirements, please leave us a message.Wireless 433MHz RC10 Elderly Distress Button SOS Emergency Distress Alarm Switch Button EmergDescription:1.Wireless SOS button2.Mainly paired with the host3.Used for help for the elderly, doorbell buttons, etc.4.Combined with the host's full wireless transmission5.Wireless transmission distance of 80 meters, full waterproofFeatures:1. Using a highly reliable low power microprocessor;2. The shape design is small and easy to carry;3. It has emergency help function;4. Battery life of up to 3 years; no need to replace;5. Using program automatic partial code, effectively overcome the shortcomings of traditional remote control re-code;6. Waterproof, anti-pressure, anti-collision automatic control device function, safer and more assured.Specifications:Valid control range of 200 meters;Transmission frequency 433.92/868.4 (optional);Wworking voltage: 3V (built-in CR2032);Static current: 0;Transmission code agreement: 1527 agreement Package Includes:1 x SOS Button