Features 【Display Calibration & High Accuracy】This 4-20ma sig nal generator features current and voltage display calibration potentiometers, allowing you to adjust and ensure high accuracy readings, making it ideal for PLC debugging and industrial testing. 【Premium Chips & Stable Performance】Built with high-quality chips, this digital sig nal generator ensures sig nal stability, reliability, and consistent performance, for valve adjustment and analog sig nal generation. 【Wide Application & Versatile Use】This 2-wire sig nal generator is widely used for PLC debugging, valve adjustment, variable frequency control, and LED testing, making it a versatile tool for industrial and testing environments. 【Easy to Use & Compact Design】With its compact size and knob adjustment, this sig nal generator is easy to operate and resistant to accidental touches, ensuring smooth and efficient sig nal generation tasks. 【Multiple Display Methods】Featuring three display methods (actual current, percentage, Hz), this 4-20ma sig nal generator improves work efficiency and readability, making it suitable for industrial and testing applications. 1. DISPLAY CALIBRATION: There are current and voltage display calibration potentiometers on the back of the module. If the display is not accurate, you can calibrate the current voltage display value yourself. 2. PREMIUM CHIPS: Excellent chips are used for sig nal stability, high reliability, and stable normal handle. 3. WIDELY USED: Our sig nal adapter can be used as a sig nal generator, valve adjustment, variable frequency control, PLC debugging, panel debugging, LED testing, and analog transmitter output. 4. EASY TO USE: Comes with a compact size, the sig nal generator is easy to use. And the knob adjustment allows easy handle, not easy to accidentally touch. 5. DISPLAY METHODS: 2 wire sig nal generator has 3 display methods, actual current, percentage, Hz. Easy to read and improve work efficiency! Specification: Item Type: sig nal Generator Material: ABS Product Overview: 4-20mA sig nal generator, button adjustment, not easy to accidentally touch Power Supply Voltage: 15v-30v Output Range: 4-20mA, 3-21MA Display Method: Actual current, percentage, Hz Sampling : Less than 500 Ω Output Accuracy: ± 0.5% Display Accuracy: 0.01 How to Use: Follow the instructions. packing list: 1 x sig nal Generator 1 x Manual Package List 1 x Signal Generator 1 x Manual