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Overvoltage protection
It basically allows shifting levels between a TTL signal (0 - 5 V) and a RS232 signal (15 V - -15 V)
and any MCU board using the TTL UARTinterface
Industrial wireless control
The latched outputs remain stable as long as the LEnn is LOW
RFID 13.56 Mhz (Read - Write) RC522 SD Card Overvoltage protectionIntroduction : RFID 13. 56 Mhz (Read Write) RC522 module is easy to use and can be used in a wide range of applications. Based on RC522 chip which is a highly integrated reader writer IC for contactless communication at 13. 56 MHz. Features : Operating frequency: 13. 56MHz. Supply Voltage: 3. 3V. Can read RC522 family ( NFC ) Reading diatance: up to 3 cm. Interface : SPI . Dimensions: 60mm 40mm. Max Data Transfer Rate: 10Mbit s.
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