Key benefits and features Wide DC input with onboard power supply Onboard screw terminal accepts 5V to 36V DC, enabling a single, versatile power input for diverse environments and reducing the need for multiple adapters. USB to 4channel isolated RS232 interface FT4232HL chip delivers fast, stable communication with broad compatibility. USB to 4channel isolated RS232 support makes it easy to expand and integrate multiple RS232 industrial serial devices from a single USB host. Robust isolation for reliability and performance Onboard unibody power supply isolation provides a stable, isolated voltage rail. Onboard unibody digital isolation enables signal isolation, delivering reliability, strong antiinterference performance, and low power consumption. Comprehensive protection and surge resilience Onboard Transient Voltage Suppressor suppresses surge voltages and transient spikes, providing lightning protection and ESD protection. Selfrecovery fuse and protection diodes offer overcurrent and overvoltage protection, delivering stable outputs and improved shock resistance. Use scenarios Industrial control and automation Connect a PC or PLC to multiple RS232 devices (sensors, controllers, meters) via USB, with galvanic isolation reducing groundloop issues and enhancing system reliability. Data logging, testing, and diagnostics Rapidly add isolated RS232 channels to a test bench or dataacquisition setup, enabling secure, interference communication and safe longterm operation. Field service and remote installations Power from a vehicle or field equipment within the 5V–36V range, while protection features mitigate surges and transients common in mobile or remote environments. Specifications and compatibility highlights Power input: 5V–36V DC via onboard screw terminal Interface: USB to 4channel isolated RS232 Controller: FT4232HL chip for fast, stable communication Isolation: Unibody power supply isolation and unibody digital isolation for signal isolation Protections: Transient Voltage Suppressor (TVS), lightning/ESD protection, selfrecovery fuse, protection diodes Performance: Stable voltage outputs; improved shock resistance; enhanced antiinterference characteristics Notes Designed to enhance reliability in industrial and field applications by combining versatile power input, USB connectivity, signal and power isolation, and robust protective features. Maintains compatibility with USB hosts and RS232 peripherals while providing strong protection against electrical transients and faults.