1. Passive two-wire 4-20mA current loop, wiring fully compatible with 2, 3, and 4-wire systems 2. 0.01 precision, liquid crystal display, encoder knob, terminal block has no polarity 3. Configurable coarse and fine adjustment modes, number of turns adjustable 4. Adjustable output range: 4-20mA (control equipment) or 3-21mA (debug signal) 5. Selectable display modes: actual current, 0-100.0%, or 0-50.0Hz 6. Linear output with calibration capability 7. Option to automatically store output value 8. Programmable automatic curve output with 1-9 segments 9. Configurable 2-9 preset points for quick output adjustment, selectable via knob Technical specifications: Power supply voltage: 15V – 30V Output range: 4-20mA / 3-21mA Display modes: Real Current / 0-100.0% / 0-50.0Hz Sampling resistance: Less than 500 ohms Output accuracy: ±0.5% Display accuracy: 0.01 Color: Photo color Material: Plastic Size: Approx. 79.5 x 42.2mm Package contents: 2 x Signal generator Note: Light reflection and display differences may cause slight variations between the product color in images and actual color. Measurement error allowance is +/- 1-3cm.