🔧 Unleash Precision in Your Projects! Features short circuit and reverse connection protection for worry-free operation. Lightweight and compact, designed for on-the-go professionals in R&D and maintenance. Easily switch between voltage (-10V to +10V) and current (0-22mA) for maximum flexibility. Perfect for PLC and panel debugging, ensuring seamless equipment testing. One-key operation and memory function make it easy to use, even for beginners. 4-Digit LCD Display Accuracy 0.01 1000mAh Battery The Koolertron 0/4-20mA DC 0-10V Signal Generator is a multifunctional, portable device designed for professionals in the maintenance and R&D sectors. It features a built-in 1000mAh rechargeable battery, high accuracy of 0.01, and a user-friendly interface, making it ideal for various applications including PLC debugging and equipment testing.