Key benefits Protects circuits from surges with transient voltage suppression, reducing the risk of damage from transient events in the system. Provides stable isolation with integrated power isolation, including reverse polarity protection and overvoltage protection on the power input, helping maintain safe and reliable operation. Delivers isolated signals with builtin digital isolation at the remote end, offering reliability, strong resistance to interference, and low power consumption without requiring extra power at the isolated side. Converts standard signals to TTL levels in the 3.3V to 5V range, enabling easy interfacing with common microcontrollers and digital devices. Core features Transient voltage suppression to effectively damp surges in the circuit. Integrated power isolation with reverseresistance connection protection and overvoltage protection on the power supply, ensuring stable, isolated operating voltages. Isolated end requires no additional power; integrated digital isolation provides signal isolation with reliability and strong interference resistance and low power usage. Signal conversion from standard levels to 3.3V 5V TTL levels for straightforward compatibility with 3.3V/5V logic systems. Specifications and compatibility notes Isolation: builtin digital isolation on the signal path; no external power required at the isolated end. Output level: TTL compatible in the 3.3V to 5V range. Power protection: reverse polarity and overvoltage protection on the power input to maintain stable isolation voltage. Interference resistance: designed to tolerate common electrical noise and interference while maintaining signal integrity. Form factor: compact design suitable for standard PCB mounting and spaceconstrained installations. Practical use scenarios Industrial control and automation: interface sensors and actuators connected to PLCs or controllers while maintaining galvanic isolation to prevent ground loops and protect control equipment. Data acquisition and instrumentation: connect voltage or noisy measurement sources to microcontrollers or data loggers without compromising signal integrity or safety. Embedded system development: isolate digital interfaces between a microcontroller and peripheral devices or external modules, reducing EMI impact and potential damage from voltage transients. Why this product stands out Combines surge suppression, robust power isolation with protective features, and isolated digital signaling in a single compact solution. No external power is needed on the isolated side, simplifying wiring and reducing component count. Flexible TTL level translation to 3.3V and 5V ensures broad compatibility with common development boards, microcontrollers, and digital devices. Emphasizes reliability and low power consumption while maintaining strong resistance to interference, suitable for demanding environments.