Features Display Calibration for Precision: Easily calibrate current and voltage display values using potentiometers on the back, ensuring accurate readings tailored to your needs Premium Chips for Reliability: Equipped with high-quality chips that guarantee signal stability and high reliability, delivering consistent performance in every application Versatile Application Usage: This device serves multiple functions, including signal generation, valve adjustment, PLC debugging, and LED testing, making it an ential tool for various projects User-Friendly Design: Compact and easy to operate, the adjustable knob prevents accidental changes, providing a seaml user experience for both beginners and profionals Multiple Display Methods: Featuring 3 clear display options—actual current, percentage, and Hz—this tool enhances readability and boosts work efficiency in any setting Features: 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 signal stability, high reliability, and stable normal . 3、WIDELY USED: Our signal adapter can be used as a signal 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 signal generator is easy to use. And the knob adjustment allows easy , not easy to accidentally touch. 5、DISPLAY METHODS: 2 wire signal generator has 3 display methods, actual current, percentage, Hz. Easy to read and improve work efficiency! Specification: Item Type: Signal Generator Material: ABS Product Overview: 4-20mA signal 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 Resistance: L than 500 Ω Output Accuracy: ± 0.5% Display Accuracy: 0.01 Package List: 1 x Signal Generator 1 x Manual Package List 1 x Signal Generator 1 x Manual