DC-to-DC Boost Module, Power Step Up Converter Regulator Voltage Converter with Digital Voltmeter Touch Button: This step up voltage module has a touch button switch to change the measured value of the input or output voltage, and an indicator light shows the voltage to be measured Voltmeter Design: This dc to dc boost module uses a voltmeter design, the voltmeter error is 0.1V, and the measurement range is 5V~35V Convenient Connection: The input and output of this power step-up module have screw terminals, which can be easily connected even without a soldering iron, and the pads for soldering are reserved Working Current: The maximum output current of this step up voltage module can reach 4A; recommended working current is about 2A, if it exceeds 2A, please add a heat sink Wide Range of Applications: This step up voltage module is widely used in batteries, power transformer, DIY adjustable regulated power supplies, industrial equipment 9 to 12V, 12V to 18V, 18V to 24V, etc. color: blue Size: length 66* width 36* height 14mm Quantity: 1pc Kind tips: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding. 3. Only the above package contents, excluding other products.