Description:<br>DC 90V 20A Digital Amp Volt Combo Meter Power Monitor Double Current Voltage Power Meter <br> This is a multi-function meter capable of measuring a variety of physical quantities such as voltage， current， power， battery charge capacity and time， but also can set various protection features such as: overvoltage protection， overcurrent protection， over power protection， overcharge capacity protection， limit protection， and undervoltage protection and other protection， more measurable parameters， a wide range of protection features on this table. The meter has two LED digital tube up and down while the measured data display， you can use the flexibility to switch display different physical quantities.<br>  <br> Specifications:  <br> 1. The voltage and current Display: 4 LED， 3 digits + a display unit<br> 2. Display Resolution: 0.01V， 0.01A， 0.01W， 0.01AH， 0.01H<br> 3. Voltage Accuracy: &amp;plusmn; 1% + 2 words<br> The current accuracy: &amp;plusmn; 2% + 5 words<br> 5. Measuring rate: 5 times \/ sec<br> 6. Type of protection: OCP， OAH， OVP， OPP， OFT， LOP<br> 7. Protection Range: Over-current protection OCP: 0.01 ~ upper limit<br> Overcharge capacity protection OAH: 0.01AH ~ 999AH<br> Overvoltage protection OVP: 0.01V ~ 99.9V<br> Undervoltage protection LOP: 0.01V ~ 99.9V<br> Over Power Protection OPP: 0.01W ~ 9.99kW<br> (KW shown as P.)<br> Timeout protection OFT: 0.01 hours to 99.9 hours<br> 8. Display Window Size: 66 (mm) x 31 (mm); Product Size: 78 (mm) x 43 (mm) x 25 (mm)<br> 9. The voltage range: 0 ~ 90V<br> 10. The current range: 0 ~ 20A<br>  <br> Instruction manual:<br> 1. The input and output lines connected properly， pay attention to the wiring can not reverse，<br> 2. Make sure the input voltage is within the range of the instrument can withstand voltage， the power， the above digital voltage value below the default display digital display current default value (if it is turned off with the following default display is the -OFF， it represents the default off).<br> 3. Shutdown of the model， the default is off， if it is confirmed this voltage Yes， you can press the key output voltage when the input voltage is then applied to the load.<br> 4. Press the up button to select the top of the digital display item， press the down button to select items below digital display， very flexible and convenient.<br>  <br> Package include:  <br> 1X Digital Amp Volt Combo Meter  Details pictures: