30v digital usb voltage

Description: Digital Display USB Multifunction Tester 3V-30V Mini Current Voltage Charger Capacity Tester with Overcurrent Overvoltage Protect Specification: 1 Input / output voltage: 3V-30V 2 The input / output current: 0A- 3A 3 The test capacity range: 0-99999 mA 4 Accuracy: ± 1% 5 The test: voltage, current, discharge flow 6 The communication function: 7 Timing: YES 8 The over-current protection: Yes USAGE: Power display current and voltage, a single short press the button for about 0.5 seconds to view the capacity and timing screens. When displayed on the screen press capacity around button for two seconds to clear the stored data. When the display screen at the timing of the long press button for two seconds will be flashing numbers, and then press a single button for 0.5 seconds each time the cumulative 0.5 hours per block long press 2 seconds to confirm the save. To not adjusted to the timing of the timer function 0 hours (0 hours is normally open) phone is fully charged to automatically turn off the output. No load 20 seconds automatically shut down output. Current exceeds 3A will automatically shut down when the output voltage is higher than 22V. Close current output window displays OFF. Single short press the button for about 0.5 seconds to activate the output. Three characteristics The phone is fully charged to automatically turn off the output. No load 20 seconds automatically shut down output. It displays the voltage and current data mAH, timing, easy viewing. It can detect mobile power output mAH. Power-down save function USB and MicroUSB port male double take power, can be detected MicroUSB line quality. Current sampling 50 milliohms, smaller loss. With precision current calibration, higher current accuracy (calibrated okay shipped). Measuring voltage and current: USB male plug 5V chargers, mobile phones and other equipment female insert, read current and voltage directly. MicroUSB line quality measurement: female plug mobile phones and other devices, first use the native male plug 5V chargers, remember that voltage, then MicroUSB cable into the bore in mind that the machine MicroUSB charger voltage from 5V, the smaller the gap voltage MicroUSB cable quality is better. Battery capacity test: Use TP4056 and other linear charging circuit through this capacity to the table completely empty battery is fully charged to full capacity reading on the battery capacity, the use of this method can be measured charge capacity of the phone, the phone can even calculate the charging efficiency. Mobile measuring power output capacity and efficiency: The first machine connected mobile power, mobile power turn on, long press the button until the volume of data to zero, into the phone and more mobile power charging until no power automatically shut down. Next displayed when you turn the unit capacity is the mobile power output mAH. Note that this mAH than nominal mAH small output mAH * Output voltage 5V / battery mAH * Battery voltage 3.7V = mobile power efficiency Package included: 1 x Digital Display USB Multifunction Tester Details pictures:

Specification: Modle: YS-04 Name: Step down voltmeter module Input voltage: DC 4.5 ~ 40V Output voltage: 5V (when the input voltage is between 6.5V ~ 40V) Output current: 2A Size: approx 5.7 x 2 x 1cm(L x W x H) Application: can be used on car, electric bike, motorcycle for voltage measurement and to charge phone, iPad, Mp3 etc. Feature: The voltmeter has automatic calibration function. With reverse connection protection. With overheat protection and short circuit protection. With USB power indicator light. High efficiency and low ripple. Instructions: When you need to charge the mobile phone, Ipad, MP3 and other digital products, touch 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, touch the "low power" button, then the module into the ultra-low power standby mode, USB output is also turned off accordingly. Package included: 3 x Step down voltmeter module

Specification: Modle: YS-04 Name: Step down voltmeter module Input voltage: DC 4.5 ~ 40V Output voltage: 5V (when the input voltage is between 6.5V ~ 40V) Output current: 2A Size: approx 5.7 x 2 x 1cm(L x W x H) Application: can be used on car, electric bike, motorcycle for voltage measurement and to charge phone, iPad, Mp3 etc. Feature: The voltmeter has automatic calibration function. With reverse connection protection. With overheat protection and short circuit protection. With USB power indicator light. High efficiency and low ripple. Instructions: When you need to charge the mobile phone, Ipad, MP3 and other digital products, touch 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, touch the "low power" button, then the module into the ultra-low power standby mode, USB output is also turned off accordingly. Package included: 10 x Step down voltmeter module

Description: Large output power, energy sufficient, good quality, can directly drive 4 Ω or 8 Ω small speakers Good noise suppression you will hear nothing from the loudspeaker if there is no audio input Your can charge this board directly with your computer or mobile phone USB Super mini design can be easily placed in a variety of digital products The whole board adopts machine welding with high quality stand The eft and right channels output end cannot connect together! Specifications: Unit size: 1.85 x 2.11cm Material: FR4 Input Voltage: 2.5 - 5V USB power supply is available Package included: 20 x 3W D-Type PAM8403 amplifier board

USB Current Voltage Meter Digital Display Color Tester With Bluetooth Voltmeter

Digital Camera Sony RX10 IV Colour: Black Characteristics: LCD Screen Built-in microphone Connections: USB USB 2.0 Micro USB Jack Connectivity: Bluetooth Wi-Fi HDMI Bluetooth 4.1 NFC Batteries included: Yes Includes: Adapter AC Cover Type: 4K Ultra HD Resolution: 3840 x 2160 px Screen: 3" Tuner: NTSC,PAL Voltage: 7,2 V Form factor: Compact Working range for temperature: 0º / 40º

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Features: 1) 8192 pixels HD display. 2) D+ D- Voltage Tester. 3) Memory power time data such as power. 4) The single monitoring shows charging voltage, current, power, power WH,mAH, charging time and other information. 5) USB is the copper pin and a low resistance in sampling technology, access after almost does not affect the charging speed. 6) Wide voltage from 3.30 V to 32.7 V. 7) Low and lower power since the) Specification: Voltage measuring range: 3.30V ~ 32.7 V Resolution precision: 0.01 V Current measuring range: 0.00A ~ 5.00 A Resolution precision: 0.01 A Power cumulative range: 0 ~ 999999 WH Resolution precision: 0.001 Wh Capacity range: 0~999999 mAH Resolution precision: 0.001 Ah Temperature: 0??~+ 80?? Resolution precision:1 ??/span> D+ Voltage: 0.000V~2.999 V Resolution precision: 0.001 V D- Voltage: 0.000V~2.999 V Resolution precision: 0.001 V Load impedance: 0~999 ohm Resolution precision: 1 ohm Power metering range: 0~299.999 W Resolution precision: 0.001 W Timing maximum time: 999 H 59 M 59 S Resolution precision: 1 S Time to refresh: > 500 ms/time > 500 ms/times Measurement rate: 0.5 times/s Use large equipment of the same metal manganese bronze sampling resistor (1.0 mm diameter metal manganese bronze material Shell Color: Blue LCD Screen Backlight: White Product size: 65 x 24 x 14 mm Since the power flow: Working temperature: - 10 ~ + 60 ??/span> Working humidity: 10 ~ 80 (no doubt) The pressure of work: 80 ~ 106 kpa Net weight: 19g Package weight: 28g Important Tips: 1. Backlit the default value is 10 seconds automatically shut down, if you need to close a backlight or normally open backlighting, please in double-click backlit screen button or click the button to adjust. 2. When the ambient temperature changes or the outside heat conduction to tester causes the current to not return to zero and the display shows 0.01A or 0.02A or otherwise, Please Hold on the key buttion then insert to USB Charger It can make the current temperature of the ambient current zero calibration, After the zero can more accurate measurements. And when in Zero calibration, the output can not have any load current consumption, so usb tester display 0.00A. 3. Backlight default time is 10S time, through the key button, switch to the BL interface: 10S time interface, double-click or three-click to increase(+) time or decrease(-) time the backlight time, and the same time backlight switch "BL: OFF(time) ~BL: ON (time) 1S ~ 59S range" Increase(+) or three-Click(-) after the reduction, then long press key is a continuous increase in the reduction. To meet the individual needs of users. 4. When the power is > 0.5W, the time will be calculated! Packing Included: 1 x Digital USB Voltmeter Tester Detail Pictures: