Reliable connections: quality USBB connector and foolproof IDC connector design reduce connection errors and make installation fast and dependable. Stable, protected power outputs: onboard resettable fuse plus protection diodes stabilize current and voltage, protect against overcurrent and overvoltage events, and improve resistance to power surges and shocks. Safe, robust I/O communication: builtin IO protection circuit provides surge suppression and ESD protection for safer, more stable data transfer in noisy or industrial environments. Selectable TTL levels: onboard TTL serial port with 3.3V / 5V voltagelevel switch lets you match the interface voltage to the target device without external level shifters. Durable enclosure: aluminium alloy body with oxidation dullpolish finish and precision CNC openings offers a solid, longlasting housing that protects electronics and maintains a professional appearance. Why this product matters Reduces risk of hardware damage and communication errors by combining power protection and I/O protection on a single board. Saves time and extra components by integrating a selectable TTL interface and foolproof connectors. Provides a durable, serviceready enclosure suitable for repeated use in labs, workshops, or field deployments. Key functions and compatibility Interfaces: USBB connector and IDC connector for easy integration with host PCs and compatible devices. Protection: resettable fuse, protection diodes, IO surge suppressors, and ESD protection for safer operation. Serial interface: TTL serial port with switchable 3.3V / 5V levels for compatibility with a wide range of microcontrollers and peripheral devices. Construction: aluminium alloy enclosure manufactured with CNC openings and an oxidation dullpolish surface for durability and ease of mounting. Practical applications Firmware development and debugging: connect development boards or modules via the USBB/IDC interface and switch TTL levels as needed for different targets. Field data acquisition and control: use the onboard protection and rugged enclosure to maintain reliable communication and power in industrial or outdoor setups. Prototyping and labs: quickly interconnect sensors, microcontrollers, and peripherals with minimal wiring errors thanks to the foolproof IDC connector and selectable serial levels.