1. Since the module design does not require a common ground at the beginning, it is not possible to add a diode on the board tube, and the output capacitor to prevent damage caused by transient overvoltage, so the user When in use, there may be instantaneous high-voltage pulses, or the use voltage is close to In the case of 35V, it is recommended to add diodes and The output capacitor protects the module. 2. The voltage drop of the module is about 0.3V when the module is unloaded or the load current is extremely small. When the load current When it is 10ma (12V voltage test), the voltage drop drop significantly and is related to the current small related. 3. Since the module does not need to be grounded, it is superior to modules that need to be grounded., Manufacturer: Duanthry