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% / 50.0HZ6, linear output, can be calibrated7, can be set to automatically store the output value8, programmable automatic curve output cycle 1-9 segment9, can set 2-9 points to quickly adjust the output, the knob directly calls these currentsTechnical indicators:1.1Power supply voltage:15V---30V;1.2Output range:4-20mA/3-21mA;1.3Display mode: Real Current / 0-100.0%/ 0-50.0Hz;1.4Sampling resistance:Less than 500 ohms;1.5Output accuracy:0.5%;Display accuracy:0.01Colour:greyMaterial:plasticPackage Contents:1 x Signal generatorOnly the above package content, other products 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.