ZigBee one button alarm SOS emergency call button

Power input: dc3v CR2032 battery
Operating temperature: - 10 ℃ ~ + 55 ℃
Communication protocol: ZigBee
Battery service life: more than one year, 20 times a day (replaceable)
Material: PC
System support: ios8 0/Android4. 0 and above
App Name: graffiti smart
Low battery warning: support
Product size: Φ 50mm*17mm
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