Features ✅【Input Power 】- DC 3.3-30V. recommended power supply is 12-24VDC, product can generate 4-20mA current output by manual adjusting potentiometer, used for current analog quantity 4-20mA output. ✅【Output Current】- Output current can be constant automatically at setting value according to adjustment; it can also be used as a constant current source of which the maximum output current should not exceed 20mA. ✅【Module Compatibility】- Module power consumption current is less than 30mA, supports for general equipment. Universal power supply of module, can be used for PLC, frequency converter, servo. ✅【Current Generator Size】- Potentiometer Installation Hold Diameter: 10mm. L×W×H: 73×54×30mm/2.9×2.1×1.2in. Hole Spacing: 61mm/2.4in. Suitable Screws: M3 (NOT included). ✅【About Wiring】- 3-32V: DC power supply positive. GND(left): Power supply negative. GND(right): 4-20mA output current negative. 4-20mA-OUT: 4-20mA output current positive. Features: ✅【Input Power 】- DC 3.3-30V. recommended power supply is 12-24VDC, product can generate 4-20mA current output by manual adjusting potentiometer, used for current analog quantity 4-20mA output. ✅【Output Current】- Output current can be constant automatically at setting value according to adjustment; it can also be used as a constant current source of which the maximum output current should not exceed 20mA. ✅【Module Compatibility】- Module power consumption current is less than 30mA, supports for general equipment. Universal power supply of module, can be used for PLC, frequency converter, servo. ✅【Current Generator Size】- Potentiometer Installation Hold Diameter: 10mm. L×W×H: 73×54×30mm/2.9×2.1×1.2in. Hole Spacing: 61mm/2.4in. Suitable Screws: M3 (NOT included). ✅【About Wiring】- 3-32V: DC power supply positive. GND(left): Power supply negative. GND(right): 4-20mA output current negative. 4-20mA-OUT: 4-20mA output current positive. Specifications: Type: Current generator Model: 4-20mA Potentiometer Installation Hold Diameter: 10mm Size(L*W*H): 73*54*30mm/2.9*2.1*1.2in Hole Spacing: 61mm/2.4in    Suitable Screws: M3 (NOT included) Weight: 74g(approx.) Wiring: 3-32V: DC power supply positive GND(left): Power supply negative   GND(right): 4-20mA output current negative 4-20mA-OUT: 4-20mA output current positive Potentiometer: Adjust output range of 4-20mA, clockwise to increase, counterclockwise to reduce   Package Includes: 1 x Signal Generator Package List