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. Adjustable 2-9 preset points for quick output adjustment; knob allows direct recall of saved currents Technical Specifications: 1.1 Power supply voltage: 15V 30V 1.2 Output range: 4-20mA / 3-21mA 1.3 Display modes: Real Current / 0-100.0% / 0-50.0Hz 1.4 Sampling resistance: Less than 500 ohms 1.5 Output accuracy: 0.5%; Display accuracy: 0.01 Color: Grey Material: Plastic Package Contents: 1 x Signal Generator Note: Light reflection and different displays may cause slight color variation between the item in the image and the actual product. Measurement error allowance is +/- 1-3cm.