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Wireless SOS button The effective control range is 200 meters; Transmission frequency 433. 92/868. 4 (optional) ; Working voltage: 3V (CR2450) ; Quiet current: 0; Transmission code protocol: 1527 protocol; Product size: 50*13MM |
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: nbeverstar
: +86 13777224610
: +86 13777224610
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