Professional power supply design with intuitive operability. Simple and intuitive operation, fast and accurate selection of voltage and current can be realized. To prevent damage to the load Can be set to the value of over-voltage protection and over-current protection to prevent the voltage regulator from beyond the threshold can The keyguard lock panel buttons to prevent undesirable results in the key test engineering,5 user-programmable preset settings Just press the button to recall and save area a key to bring up the user to store the data and save user settings