Features • Adjustable Output Control: Quickly adjust the output response with a simple knob for immediate results without any delay • Built-In Polarity Protection: Prevents damage to components by ensuring safe even when power connections are reversed • Versatile Application Use: Ideal for various applications, including signal sourcing, valve regulation, output meter testing, and LED testing • Easy Output Testing: Easily verify output functionality by connecting a multimeter to the "4-20mA output" terminal for quick diagnostics • User-Friendly Design: Simplifies wiring connections and enhances performance, making it an ideal choice for both profionals and hobbyists 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