Item Type: Current Signal Generator_x000D_ Supply Voltage: 15-30V_x000D_ Output Range: 4-20MA_x000D_ Display Mode: Actual current, percentage, Hz_x000D_ Sampling Resistance: Less than 500_x000D_ Output Accuracy: 0.5%_x000D_ Display Accuracy: 0.01_x000D_ Hole Opening Size: Approx. 77 x 40mm / 3.03 x 1.57in 1GENERATE VOLTAGE AND CONTROL CURRENT: This generator can use 4?20mA to generate voltage and control the current in the circuit 2HIGH ACCURACY WITH LCD: Accuracy up to 0.01, come with LCD display, support rotary encoder adjustment, two terminals non polarity 3SETTABLE OUTPUT RANGE: The output range can be set, 4?20mA(device control) or to 21mA (signal debugging) 4CONVENIENT CHECK: The display mode can be set for easy viewing of values, provide great convenience for your work 5CALIBRATED OUTPUT: Linear output can be calibrated, actual output can be consistent with customer equipment display 1 x Current Signal Generator 1 x User Manual