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Ramps boards are the heart of most DIY 3D printers on the market and a nice clean compact way to integrate all the systems into a compact enclosure mountable format
Operation Temperature: -40~+60℃
A kind of combined sensor which use the IIC communication protocol (fully compatible with 3-5v system
F3: Start timer: press left select the number of hours
Original Finger Print Sensor R307 Optical Finger Print Scanner Reader Module Hi link Ramps boards are the heartThis is the R307 Optical Fingerprint Reader Sensor Module. R307 fingerprint module is a fingerprint sensor with a TTL UART interface for direct connections to microcontroller UART or to PC through MAX232 USB Serial adapter. The user can store the fingerprint data in the module and can configure it in 1: 1 or 1: N mode for identifying the person. The FP module can directly interface with 3. 3 or 5v Microcontroller. A level converter (like MAX232) is
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