Widevoltage controller with micro USB power option, LCD readout, and builtin safety and interference protection. Designed for flexible use in vehicles, equipment, and portable setups that require reliable parameter control and quick shutdown capability. Key benefits Flexible power compatibility: operates from 6 to 30V DC and can also be powered via a micro USB 5.0V supply, making it easy to use with battery systems, automotive 12V or 24V installations, and USB power banks. Reduced power consumption: sleep mode lowers standby power draw when the device is idle, extending battery life in portable and remote applications. Precise, independent control: independent setting of op, cl, and lop parameters allows accurate configuration of operational states without affecting other settings. Improved interference immunity: optocoupler isolation separates control and power circuits to reduce electrical noise and improve signal stability. Clear status and parameter visibility: easy to read LCD displays current mode and parameter values at a glance, simplifying setup and troubleshooting. Enhanced safety: a dedicated emergency stop key enables immediate shutdown, and reverse connection protection helps prevent circuit damage during incorrect wiring. Features and specifications Voltage input range: 6 to 30V DC Alternative power: micro USB 5.0V input option Power management: sleep mode for lower power consumption Control settings: independent adjustment of op, cl, and lop parameters Isolation: optocoupler isolation for improved anti interference performance User interface: clear LCD display showing mode and parameters Safety: emergency stop key and reverse connection protection to prevent damage Practical applications Automotive and vehicle systems: use in 12V or 24V vehicle circuits for controlled switching and safe emergency shutdown during maintenance or testing. Portable and batterypowered projects: micro USB power option and sleep mode make it suitable for field instruments, remote sensors, and DIY power control where conserving battery life matters. Industrial control and testing benches: independent parameter settings and optocoupler isolation provide stable control and reduced interference when integrating with relays, actuators, or measurement gear. Why choose this device This controller combines wide voltage compatibility, a convenient micro USB power option, and practical safety features to adapt to a range of electrical environments. Its independent parameter settings and optocoupler isolation provide reliable, lownoise operation, while the LCD and emergency stop key make the unit straightforward to operate and maintain.