Fingerprint Module, Barcode Scanner, Fingerprint Access Control manufacturer / supplier in China, offering Grow GM802 Series DC3.3V USB/Ttl232 Barcode Scanner 1d/2D Qr Bar Code Reader, Grow K219-a+R502-a Programmable Multiple Relay IR Fingerprint Control Board, Grow K220+R502-a DC10-24V Two Relay Administrator/User Fingerprint Access Control Board and so on.
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