Mucjun DC-DC 4.5-40V Step Down LED Volt Meterr USB Voltage Converter Buck Module 5V/2AName: Step down voltmeter moduleInput voltage: DC 4.5 ~ 40V.Output voltage: 5V (when the input voltage is between 6.5V ~ 40V).Output current: 2A.Application: can be used on car, electric bike, motorcycle for voltage measurement and to charge phone, , Mp3 etc.Size: approx 5.7cm x 2cm x 1cm(LxWxH)Color: blueMaterial: PC+ metalInstructions: When you need to charge the mobile phone, , MP3 and other digital products, touching the "output enable" button, then the USB power indicator light on, the USB output voltage 5V ; When you need to turn off the digital tube, touching the "low power" button, then the module into the ultra-low power standby mode, USB output is also turned off accordingly.Package Included: 1 x Step down voltmeter moduleOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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