DROK Wireless Bluetooth Voltage Regulator Computer Remote Monitor Control Buck Converter DC 6-55V to 0-50V 5A Step Down Stabilized Switching Power Supply Module USB Communication Volt Transformer DROK buck voltage converter input voltage range DC 6-55V, output voltage range 0-50V, output current range 0-5A, output power range 0-250W, output voltage resolution 0.01V, output current resolution: 0.001A. Wireless & Wire Connection: it can connect with computer by Bluetooth, in the distance range of 5 meters; or can connect by the USB communication board. User can remote monitor, voltage setting and current setting can be operated quickly. Quick Operation: it is easy to operate converter with this, you can do voltage setting and current setting as quickly as possible; you can also set it to cut off output when over voltage, over current and over power. LCD Display: Built with color LCD display, it will be convenient for you to review preset voltage, input voltage, output voltage, preset current, output current, output power and brightness of LCD. Package Including: 1x DC adjustable constant voltage power supply converter; 1x USB communication board; 1x bluetooth communication board; 1x cable.