Features 1、easy to use, easy to wire, knob operation, in response to the output immediately after adjustment, no delay. 2、in order to achieve stepless fine adjustment, particularly multi-ring (5 * 360) potentiometer to adjust the actual fineness of up to 0.01mA, operate freely. 3、power port has a polarity protection, power reverse does not work, do not burn components. 4、the power supply voltage: 12V DC or 24V (tolerance ± 25%), Total power <1W. 5、12V DC power supply, output load impedance range between 0-350 ohms; between 0-800 Ohm 24V DC power supply, output load impedance range. Specification Features: 1, easy to use, easy to wire, knob operation, in response to the output immediately after adjustment, no delay 2, in order to achieve stepless fine adjustment, particularly multi-ring (5 * 360) potentiometer to adjust the actual fineness of up to 0.01mA, operate freely 3, power port has a polarity protection, power reverse does not work, do not burn components 5, 12V DC power supply, output load impedance range between 0-350 ohms; between 0-800 Ohm 24V DC power supply, output load impedance range 6, the test output is normal, you can use a multimeter (DC current file) short "4-20mA output" terminal value and the comparison shows that the multimeter readings are the same 7, the product can be used: signal sources, regulating valves, control, test instrumentation, light emitting diode test, the inverter output analog transmitter 8, the header housing, easy to install, hole size: 76mm * 40mm. The overall size of 80mm * 42mm Packing include:1 x DC 12V 24V 4-20mA Signal Source Signal Generator Constant Current Source 0.01mA Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List