DROK® 0.28'' LED 4 Digit Digital Voltmeter Ammeter Gauge DC 0-33V/0-999.9mA 0-3A 12V Voltage Current Measurement Meter Panel Volt Amp Tester Multimeter Red Digital Dual Display Monitor

Brand:DROK

2.3/5

39.17

Technical Parameters: Display color: Red+Red Display mode: Dual 0.28" LED digital 4 bit tube Refresh rate: About 200 ms/time Dimenions: 48 x 29 x 26 mm (L*W* H) Cutting size: 45 x 26 mm (L*W) Supply voltage: DC 3.5-28V Lead wire length: 14 cm (5-wires) Measurement range: DC 0-999.9mA-3.000A(current); 0.00-33.00V(voltage) Operation temperature: -10 degrees~65 degrees Measurement accuracy: ± (0.3% + 2 digits) Net weight : 22g Display description: Voltage measurement range:0.00-33.00V; the minimum resolution is 10mV Current measurement range: 0-999.9mA-3.000A. when the measuring current is below 1A, it display ***.*mA,the resolusion is 0.1mA; when the measuring current is higher than 1A, it display *.***A,the resolusion is 1mA; Wiring Instruction: RED(VCC): Power input+, 3.5-28V (NOTE: If the measuring signal is lower than 28V and have abundant power supply, it can be used as power supply for the meter. black wire and yellow wire are contacted together to use) Black(GND): Power input- , Measurement signal- (3.5-28V) Yellow(VIN): Measurement signal+ (0-33.00V) RED(I+): Current input+ (in series in Power Supply Negative or Load Negative) Black(I-): Current input- (in series in Power Supply Negative or Load Negative) Package include: 1x 0-33.00V/0-3.000A Volt Amp Meter

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NOTE: Wiring instruction is on the Product Description of this page, please wiring according to the instruction. Power supply voltage: DC 3.5-28V. No need isolated power supply. Voltage compensation function: can moderate compensation of the voltage loss on connecting wire. The above digital tube displays voltage while the below digital tube displays current. Measurement range: DC 0-999.9mA-3.000A(current); 0.00-33.00V(voltage).
Brand DROK
Color Red
Country of Origin China
Is Discontinued By Manufacturer No
Item model number 300005
Item Weight 22 Grams
Manufacturer DROK
Package Dimensions 3.7 x 2.28 x 1.38 inches; 0.78 Ounces
Power Source Corded Electric
Style Digital

2.3

4 Review
5 Star
21
4 Star
33
3 Star
23
2 Star
0
1 Star
23

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Scritto da: Erik Thomas
Fairly accurate, no calibration
Tested up to 3A on a resistive load. The current measurement accuracy is quite good, being only +\- 0.005 A (5mA) different from my multimeters. The voltage measurement is less good, being anywhere from 0.05V (50mV) to 0.08 (80mV) higher than either of my two multimeters. The rated accuracy is 10mv, so that’s not great. A calibration or adjustment option would have been nice to set this, but no such option seems to exist. It has a push button, but it’s not clear what it does and pressing it doesn’t seem to do anything.
Scritto da: cielo
OOPs
These seem to work fine.
Scritto da: Ted C.
V/I small meters give continuous battery status
This meter combo was ideal to monitor the battery that powers my telescope during viewing sessions. When the voltage approaches 10.5 V I know I only have about 15 minutes before ‘shutdown’. The current meter let’s me know if all is well with the electronics, motor drives, dew heaters, etc.
Scritto da: Joe Wall
Current meter
Great product, works as expected.

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