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Product type: USB to UART TTL level. The VCC switching pad is reserved. The default is 3.3V TTL. Serial port (TTL level): 3.3V/5V. The onboard serial port transceiver indicator light allows you to check the signal transceiver status.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.