1. passive two-wire 4-20MA current loop, the wiring is fully compatible with 2, 3, 4 wire system2. 0.01 precision, liquid crystal display, encoder knob, terminal block is not positive or negative3. can set the coarse and fine adjustment mode, the number of turns can be set4. can set the output range: 4-20MA (control equipment) / 3-21MA (debug signal)5. can be set display mode: actual current / 100.0% / 50.0HZlinear output, can be calibratedcan be set to automatically store the output valueprogrammable automatic curve output cycle 1-9 segmentcan set 2-9 points to quickly adjust the output, the knob directly calls these currentsPower supply voltage:15V-30VOutput range:4-20mA/3-21mADisplay mode:Real Current / 0-100.0%/ 0-50.0HzSampling resistance:Less than 500 ohmsOutput accuracy:0.5%;Display accuracy:0.01Colour:As ShownMaterial:plasticPackage Contents:1 * Signal GeneratorOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.