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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
3mm inner diameter /4mm inner diameter
Resolution: 2000 Pulse/Rotation
oxygenated blood absorbs more infrared light and passes more red light while deoxygenated blood absorbs red light and passes more infrared light
For relay datasheet
NFC Coin NFC215 (13.56 mHz) 30mm Black ultrasound 3mm inner diameter /4mm innerNFC Coin with NXP chip type NFC 215 and 13. 56mHz frequency. The Coin is 30mm diameter made of PVC. You can print on it and also it is water proof Features Chip: NXP NTG215 Lockable : YES Protocol: ISO14443A Working Frequency: 13. 56 MHZ Reading and writing distance: 1 to 2 cm Memory: 540 Bytes NFC IC reader writer NFC Enable Phone Material: inkjet PVC Compatible to any kinds of ink Color: black Size: 30mm