1. It is mainly used for debugging of industrial site PLC, process instrument, electric valve, etc. 2. Friendly operation interface is easy to use 3. Small size, light weight, long standby time, high precision, easy to carry when going out to work 4. Adjustable button backlight and high-definition TFT color LCD screen make it more convenient for users to operate at night and during the day 5. With conventional signal input and output functions 6. Voltage and current have automatic output function, and three modes of single rise, single fall and cycle can be selected 7. With input and output conversion, voltage conversion active current mode, passive mode and current conversion voltage mode 8. The output has a custom function, and the upper and lower limits of the output can be set arbitrarily 9. Voltage input diagram, current input diagram, frame rate is 10 frames 10. PWM output can set frequency and duty cycle separately 11. Real-time curve: real-time observation of voltage and current changes 12. Powered by large-capacity lithium battery, charged by Type-c interface (5V) 13. Lithium battery capacity 3000mah, super long working time 14. 2.4-inch high-definition TFT color LCD screen, more eye-catching reading 15. Standby time: 26 hours The use time varies according to the usage (20mA continuous output can be 8-10 hours) 16. Internal reverse and overcurrent protection, protection voltage 30V 17. Dimensions: 82x27x112mm 18. Weight: 65 grams Active current output: 1. Range: 0~24mA 2. Resolution: 0.01 mA 3. Load (MAX): 750 ohms Passive current output: 1. Range: 0-24mA 2. Resolution: 0.01 mA 3. The external power supply can reach 30V Voltage output: 1. Range: 0-24V 2. Resolution: 0.01v 24V voltage output: 1. Drive current: 24mA 2. Resolution: 0.01mA Current input measurement: 1. Range: 0-24mA 2. Resolution: 0.01 mA Voltage input measurement: 1. Range: 0-30V 2. Resolution: 0.01V PWM output (frequency): 1. Range: 0-9999Hz