Plug and play: Dual-ended STEMMAQT interface, no soldering required -plug protection: Supports surge protection and supports insertion Bidirectional buffering: Automatic direction control, no configuration required Transparent transmission: No delay, does not change the 12C protocol Enhanced long-distance 12C communication, interconnection of mixed-voltage 12C systems, -pluggable 12C device support, multi-node I2C network expansion Core Functions: 12C bus signal buffering and level conversion -plug support (with surge protection) Bidirectional data flow control STEMMA QT/Qwiic interface, plug and play Basic Parameters Operating Voltage: 2.2V~5.5V Supported Rates: Standard mode (100kHz) and Fast mode (400kHz) Level Conversion: Compatible with 12C devices of different voltages Interface: Dual-ended STEMMAQT/Qwiic (2C transparent transmission) Module Dimensions: 25.4mm x 17.8mm x 5mm Color: Black Material: PCB Package Contents: 1*Buffer Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.