No source connection, two-wire 4-20mA current loop, wiring for 2, 3, 4 wire systems, 9 programmable outputs (can be used in actual dynamic test environment, each section can be set to run time /A current /b current). Digital encoder adjustment (use of potentiometer, affected by temperature and humidity, resistance value will change). Can be connected with plus and minus (two-wire system, no matter how the wiring is, it can work, will not burn the meter), high precision, good linearity (output accuracy: 0.5%; Display accuracy: 0.01) Coarse and fine adjustment modes can be set for quick and accurate adjustment, Output range can be set: 4-20mA (controller) / 3-21mA (debugging signal) Display mode: Actual current/100.0%/50.0Hz, LCD (with backlight). Linear output, calibratable Can be set to automatically output values: automatic / manual 2-9 quick adjustment output points can be set, chips, ultra-low power consumption, no heat, more stable output. The shell is beautiful and easy to install. System function: Parameter: (Turning one step clockwise is "+" Turning one step counterclockwise is "-", Press the dial. is "Confirm") 1. Press and hold the dial for 2 seconds to enter parameter setting, Display parameter number "F001", Then press "Confirm" to set the value of parameter "F001", =0 is coarse adjustment; =1 Fine adjustment; Then press "Confirm" to save the value. 2. When parameter number "FXXX" is displayed, "+" "-" Rotation modification parameter number; Enter the password first "+ - - +", To enter F002 parameter; Enter the password first "+ - + -", To enter F100 parameter; Enter the password first "- + - +", To enter F200 parameter. Power supply voltage: 15V-30V Output range: 4-20mA/3-21mA Display mode: Actual current/0-100.0%/0-50.0Hz Sampling resistance: Less than 500 ohms Output accuracy: 0.5% Display accuracy: 0.01: 1 pc Color: As shown Material: plastic Size: 79.5x42.2x24mm/3.13x1.66x0.94inch Package Contents: 1 * Signal Generator Only the above package content, other products are not included. Note: Light reflection and different screens may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.