USB to serial adapters with transceiver communication indicator. This feature provides ataglance status during data transfer, helping you verify active communication and troubleshoot connections quickly. Compatible with standard USBtoserial workflows for reliable operation. USB to TTL converter with 2.54 mm pitch pins. Pin definitions: dtr, ,tx,vcc, ,gnd. Breadboardfriendly spacing supports easy prototyping and integration with microcontroller projects. Acrylic bath tray with USB power protection. USB power has overcurrent protection using a 500ma selfrestore fuse, helping protect connected devices from power surges. Module adapter compact size 36 x 17.5 mm. Interface: mini USB. Spaceefficient design simplifies integration into tight assemblies and keeps footprint small. Use scenarios Prototyping and debugging microcontroller projects (eg, Arduino, ESP8266/ESP32) that require reliable USB serial or TTL connections for programming and data logging. Connecting TTL serial sensors or modules to a PC or development board for testing, data collection, or firmware updates. Integrating compact interfaces into spaceconstrained embedded designs where a mini USB interface and small module size are advantageous.