====== Volt/Ammeter from eBay ======
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Search string: DC 4.5-30V 0-10A LED Digital Volt meter Ammeter



==== Specifications: ====
  * Supply voltage: 4.5 30V (wide range) 
  * Test voltage: 0 ~ 100V
  * The minimum resolution below 10V: 0.01V
  * The minimum resolution above 10V: 0.1V
  * Display screen: 0.28 inch LED
  * Operating current:<20mA
  * Measuring speed:≥ 500mS / times
  * Accuracy: 1%(± 1 word)
  * Minimum operating voltage: +4.5 V
  * Maximum operating voltage: +30 V
  * Operating Humidity:10～80%
  * Operating tempratures: -10～+65
  * Operating pressure: 80 ~ 106kPa
  * Avoid direct sunlight
  * Net tweight:24 g
  * Package weight:34 g
  * Color of LED light: Red