DC Digital Voltmeter Ammeter 3 1/2 Digit LED Display Tester Indicator Monitor Meter Module Panel Mount Volt Amp Meter

High-quality materials, exquisite craftsmanship, safe, reliable and durable, long service life, complete specifications, convenient and flexible use, and better cost performance. 

1. The digital display meter is different from the pointer meter, the digital display meter needs a stable power supply for the chip and the digital tube to work before it can be used, the meter itself does not come with a power supply, the power supply needs to be purchased on its own.
   
2. This meter is a common ground type meter, that is, the negative pole of the power supply and the negative pole of the signal is connected to non-isolated! It is recommended to use an independent power supply and to lay out the wiring in a reasonable manner.
   
3. In the case of measuring signals and instrument power supply on the same line, the ammeter must be used in series on the negative circuit!
4. With 1/2 digit a digital display meter, the first digit can only show 1 or not, for example, 3 1/2 digit, although four digital tubes, but the maximum can only show 1999, 4 1/2 digit can only show a maximum of 19999, please understand correctly 3 1/2 digit, 4 1/2 digit display meter, not how many digital tubes is how many digital display meter, only the full digit of the meter to show the complete number of digit, for example, the full 4 digit, four digital tubes, can be displayed to 9999.

• DC 0-200mV【Display range: (-199.9 to 199.9mV); Resolution: 0.1mV】
  
• DC 0-2V【Display range: (-1.999 to 1.999V); Resolution: 0.001V】 
  
• DC 0-20V【Display range: (-19.99 to 19.99V); Resolution: 0.01V】 
  
• DC 0-30V【Display range: (-30.0 to 30.0V); Resolution: 0.1V】 
  
• DC 0-200V【Display range: (-199.9 to 199.9V); Resolution: 0.1V】 
  
• DC 0-500V【Display range: (-500 to 500V); Resolution: 1V】 
  
• DC 0-1000V【Display range: (-1000 to 1000mV); Resolution: 1V】 
  
• DC 0-20uA【Display range: (-19.99 to 19.99uA); Resolution: 0.01uA】 
  
• DC 0-200uA【Display range: (-199.9 to 199.9uA); Resolution: 0.1uA】 
  
• DC 0-2mA【Display range: (-1.999 to 1.999mA); Resolution: 0.001mA】 
  
• DC 0-20mA【Display range: (-19.99 to 19.99mA); Resolution: 0.01mA】 
  
• DC 0-200mA【Display range: (-199.9 to 199.9mA); Resolution: 0.1mA】 
  
• DC 0-2A【Display range: (-1.999 to 1.999A); Resolution: 0.001A】 
  
• DC 0-10A【Display range: (-10.00 to 10.00A); Resolution: 0.01A】 
  
• DC 0-20A【Display range: (-19.99 to 19.99A); Resolution: 0.01A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately)
  
• DC 0-30A【Display range: (-30.0 to 30.0A); Resolution: 0.1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately)
  
• DC 0-50A【Display range: (-50.0 to 50.0A); Resolution: 0.1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately) 
  
• DC 0-100A【Display range: (-100.0 to 100.0A); Resolution: 0.1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately) 
  
• DC 0-200A【Display range: (-199.9 to 199.9A); Resolution: 0.1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately) 
  
• DC 0-300A【Display range: (-300 to 300A); Resolution: 1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately) 
  
• DC 0-500A【Display range: (-500 to 500A); Resolution: 1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately) 
  
• DC 0-1000A【Display range: (-1000 to 1000A); Resolution: 1A】 , must be used with a 75mV shunt (product does not come with a shunt, sold separately)