BGTXINGI 2PCS DC-DC Buck Voltage Converter Power Module 4.5-40V 12V to 5V/2A + Car Voltmeter Power Supply Switch Transformer with LED Voltmeter 5V USB Charger

• Super material: It is made of electronic accessories, nickel plating on surface(anti-oxidatioan), inner conductor: pure copper.it is long lasting and durable for you to use.
• Package including: 2 Pack of Constant Current Boost Step-up Module. Integrated voltmeter, buck voltage converter and 5V USB charger port, multifunctional and practical.
• Input and output: Wide voltage measuring /input range: DC 4.5-40V; with self calibration, high accuracy. One button ("output enable" button) switch for USB output, one button ("low power" button) enters ultra low power consumption mode
• Feature: Voltmeter, step-down voltage converter and 5V USB charger port, versatile and practical. With LED indicator for USB power supply and terminal block, easy to operate.
• A wide range of applications: This module can be applied to the buck field where the input voltage is higher than the output voltage, such as battery, power transformer, DIY adjustable power supply, and so on. Maintain stable output voltage and limit the output current over a range of input voltages. Great for general voltage conversion, Car / motorcycle battery voltage monitor or other voltage measurements, and electronic projects.

About us: Two-wire car voltmeter + stable output 5.0V USB charging High performance, versatile, intelligent and user-friendly design Applications: 1.Car / motorcycle battery voltage monitor or other voltage measurements.Used for monitoring battery voltage, timely grasp battery status, can be used for various voltage measurement purposes. 2.USB Charger for Mobile phone, MP3, Tablet PC or other electronic products Module performance and highlights: 1. Ultra-wide voltmeter range: DC4.5~40V 2. 5V/2A output current capability (output voltage is 6.5~40V to stably output 5.0V) 3. One button ("output enable" button) switch for USB output, a key ("low power" button) enters ultra low power consumption mode 4. The car voltmeter can be self-calibrated, there will never be an inaccuracy of the voltmeter 5. With reverse connection protection, reverse connection does not burn 6. With overcurrent, over temperature protection 7. With USB power indicator 8. With terminal block for easy access to the line 9.High efficiency, low ripple. With reverse connection, over-current and over-temperature protection. 10.Size：58mm*21mm*10mm（L*W*H） Module use: Ultra-wide input voltage for car/battery/motorcycles, for monitoring battery voltage, for timely battery status, for a variety of voltage measurement applications. Note: this module defaults to D+ D- short connection, compatible with most mobile phone charging, and reserved the installation location of various mobile phone identification resistor. If you need to add identification resistor, please cut off the wire connecting D+ D- and add it by yourself Package including: 2* DC-DC Converter Digital Voltmeter Display USB Charger module