Features: Seamless I2C Communication: Connection multiple I2C devices with identical addresses to your main control board using this multiplexer adapter, enabling smooth data transfer and effortless operating for your projects. . 8 Channel I2C Expansion: This versatile module features 8 individually controlled I2C (0x70 0x77 address ranges), allowing connection of up to 64 same address devices when cascading 8 boards.. Broad Compatibility: Supports I2C/SMBus protocols with voltages shifting between 1.8V 5V systems. Features hot swap capability, low standby current, and power on reset functionality for microcontroller platforms. Programmable Control Option: Flexible channel selection through programmable registers with hardware reset capability (/RESET pin). Maintains systems stability with automatic channel deselection during powering up or improper operations. Voltages Protections & Flexibility: Each channel supports independently voltages (1.8V/2.5V/3.3V/5V) with 5V tolerant pins. Built in protections allows safe communication between different voltages components without additional circuitry. Specifications: Item:Bidirectional transfer switches module controlled by PCA9548A bus module With 8-channel and I2C connection (0x70 0x77 address ranges) Size about 31×21mm/1.22x0.82in Support Voltages shifting between 1.8V 5V systems Package Includes: 1PC Expansion Module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.