Features Fast Response Adjustment - The intuitive knob allows for quick output adjustments without any delay, ensuring control over your current signal generation Built-In Polarity Protection - Designed with polarity protection to safeguard your components from damage when the power is connected incorrectly, enhancing durability Versatile Testing Applications - Ideal for various uses including signal source generation, valve regulation, output meter testing, LED testing, and analog transmitter applications Quick Output Verification - Easily check output functionality by using a multimeter to connect to the "4-20mA output" terminal, ensuring reliable performance User-Friendly Design - Simplifies wiring connections for effortl setup and , making it convenient for both profionals and hobbyists alike Features: 1、Knob , adjust output response fast, no delay. 2、The power port has polarity protection and will not damage components when the power is reversed. 3、Can be used for signal source, valve regulation, output meter test, LED test, analog transmitter. 4、To test whether the output is normal, you can use a multimeter to short the "4-20mA output" terminal. 5、Easy to use and convenient to connect wire with good performance. Specification: Item Type:Current Signal Generator Power Supply: DC 12V or 24V Current: 4-20mA Total Power: between1W Output Load Impedance: 0-350 Ohms (DC12V); 0-800 Ohms (DC 24V) PCB Board Size: 50 x 50mm / 1.97 x 1.97in Package List: 1 x 4~20mA Signal Generator Module 1 x Users Manual English Package List 1 x 4~20mA Signal Generator Module 1 x Users Manual English