Working voltage:DC 15~27V /Mirco-USB 5V 1. 1CH analog output, optional voltage type (output range 0/2-10V) or current type (output range 0/4-20MA) 2. Voltage-type output load impedance requirements greater than equal 2K, current-type output impedance requirements less than equal 500 3. voltage, current output, a key switch Indicator V (red) is bright, output is 0-10V voltage signal; flashing, output is 2-10v voltage signal mA (green) is bright, output is 0-20mA current signal; flashing, output is 4-20mA current signal size:8.5*5*2cm Material:plastic colour:blue Package Contents: 1 * 0-10V/2-10V 0-20mA/4-20mA Signal Generator Adjustable Current Voltage Analog Simulator Only the above package content, other products are not included. Note: Light shooting 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.