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(To ensure accuracy voltmeter
SIG digital signal output pin
8mm required | Requires total clearance behind panel of 13mm
general purpose piezo buzzer used commonly in alerting / alarming circuits
CentIoT - SD Card Reading and Writing Module SPI Interface Wireless Accessory (To ensure accuracy voltmeterBrand: CentIoT Features: The level conversion circuit board that can interface level is 5V or 3. 3V support SD card, SDHC card (high speed card) Power supply is 4. 5V ~ 5. 5V, 3. 3V voltage regulator circuit board Communication interface is a standard SPI interface Communication interface is a standard SPI interface; 4 M2 screw positioning holes for easy installation Control Interface: A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to
US$ 1147.50
US$ 185.21
