Features 1、Easy To Adjust: This automatic wide voltages regulator is designed with an adjustment knob, which can be used to adjust the MPPT voltage, output voltage and limit the output current in a very simple way. 2、LED Display Screen: This automatic buck boost converter adopts LED display screen, which can clearly display the input voltage, output voltage, temperature, output current, output power (key switching). 3、Stable Working: This automatic bucking boosting converter module has good heat dissipation performance, which ensures stable working performance under high power, and is very efficient and reliable. 4、Over Power Guard: This boost and buck converter module has an over power guard function, when the power exceeds 700W, it will shut down the output and display OPP, which is very safe and reliable. 5、Wide Application: This adjustable voltage module has a wide range of applications, supports MPPT regulation voltage real time control, boost and buck converter operation is very simple, widely used in solar charging, battery lithium charging, LED constant current driver, voltage regulator and so on. Specification Item Type: Automatic Buck Boost Power Supply Module Material: PCB Model: ZK-SJ30 Input Voltage Range: DC6-80V Output Voltage Range: DC1.3-78V Voltage Display Range: 1.40-80.00V (Accuracy ± 0.1V) Output Current Adjustment Range: 0-30A Current Display Range: 0.00A-30.00A (Accuracy ±0.03) Adjustment Knobs: MPPT Voltage Adjustment, Output Voltage Adjustment, Output Current Limit Adjustment MPPT Function: Yes (External fan required for use with high current) Anti Reverse Connection: Yes, no diode required when connecting to battery. Constant Current (Current Limit): Yes Overpower Guard: 700W, output shuts off and displays OPP when power exceeds limit. Applications: Solar Charging, Battery Lithium Battery Charging, LED Constant Current Drive, Voltage Regulation Package List 1 x Automatic Buck Boost Converter