It is a 15W Power Converter/Adapter/Power Supply Module, Input Voltage: DC 4.5~27V, Output Voltage: DC 1.3V~25V (step-down mode, the input voltage must be 2V higher than the output voltage), Output Current: 1.5A. Application: DIY Power adapter/Charger, industrial equipments, electronic equipment, Communications Equipment, Power Tools, Car Driving Recorder, Car GPS, Car audio, LCD TV, Advertising screen, LED lights, Fan, intercom and monitor system, etc.

• Input Voltage: DC 4.5~27V
• Output Voltage: DC 1.3V~25V (step-down mode, the input voltage must be 2V higher than the output voltage)
• Output Current: 1.5A
• Output power: 15W maximum
• Ripple Frequency: About 150Khz
• Ripple Peak: About 100mV
• Dimensions: 62 x 26 x 14 mm
• Display Color: Red
• Voltage Meter Accuracy: ± (5 ‰ +1 digit)
• Static power consumption: Typical about 20mA
• IN+: Input Postive
• IN-: Input Negative
• Out+: Output Postive
• Out-: Ouput Negative

• Input and output voltages can be displayed alternately.
• Power state can be freely defined.
• With button Off function,
• Lower Power consumption.
• ON/0FF output Status, High level means output off, Low level means output on. (Note: High level (3.3V),  the maximum output current 5mA.)

• Output voltage mode: boot default display xx.x, LED OFF
• Input voltage mode: press button switch to xx.x, LED ON
• Alternating mode: press button again input/output voltage Alternately display (3S), press button again switch to output voltage display.
• (Please check the picture to see more detail.)

• 1 x DC Buck Converter( Power Supply Module/Voltage Regulator/Adapter )