Smart Voltage Checker for Smartphone with App

[FEATURES]

• The world smallest DC voltage meter (30mm)
• Real-time display of measurement results
• Compatible with Android and iOS
• Ultra low power consumption
• Easy to carry and convenient

[DESCRIPTION]
It is tiny, beautifully designed with Aluminum body Semiconductor Sensor that connects to your Smartphone to measure, collect and analyze DC Voltage. 
The unit is fully powered by the Device (Smartphone / Tablet), No battery or charger needed. The Smart V Checker is fully compatible with iOS and Android 4.2 above and output is 2.0 V above, earphone jack is 4-pole. The application can be downloaded from the App Store / Google Play by searching "smart checker" or "FTLAB"

Specification 
Measurement:DC Voltage 
Range:0~10V 
Resolution:0.01V 
Accuracy:±0.05V over full scale 
Reaction Time:0.5sec. 
Workable Temp:-20~50ºC 
Workable humidity:80% 
User Interface:Smartphone (headphone jack)/Android & iOS