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DC 0.01-120V 0.1-100A Multifunctional Wireless Digital Bi-directional Voltage Current Power Meter Ammeter Voltmeter Capacity Coulomb Counter

DC 0.01-120V 0.1-100A Multifunctional Wireless Digital Bi-directional Voltage Current Power Meter Ammeter Voltmeter Capacity Coulomb Counter

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This meter can measure DC voltage, current, power, charge and discharge capacity, watt, time and other parameters in both directions. With LCD display, several parameters displayed on the screen at the same time, is convenient for readings. At the same time, it also has many protecting functions, such as over-voltage protection, over-current protection, under-voltage protection, limit protection, etc. 

LCD color display voltage, current, power, capacity and time, etc.
Several parameters displayed on the screen at the same time, easy to read.
Bi-directional measurement of the current, no need to change the wiring direction.
Wireless data transmission between the meter and measuring board, convenient for use.
Set each address individually, and view the measurement parameters from plurality of measuring board in one meter.
When use multiple machines simultaneously, the machine can be set individually for each channel to avoid mutual interference.
You can also use standard USB cable for wired communication.
With memory function when powered off.
Screen lock, timing off, adjustable brightness functions.
VAC-1030A equipped with relay to achieve over-voltage/over-current/under-voltage, limit protection, etc.
Suitable for monitoring the output voltage and current, as well as the battery charge and discharge applications.
Small size, light weight, convenient to carry.

VAC-1100A and VAC-4300A can also achieve the protecting functions like VAC-1030A's, but users need to buy the relay separately.

Model Type: VAC-1030A / VAC-1100A / VAC-4300A(Optional)
Voltage Measuring Range: 0.01-120V(VAC-1030A/VAC-1100A); 0.01-400V(VAC-4300A)
Voltage Accuracy: 0.01V
Voltage Error: (+/-)1%+5 figures
Current Measuring Range: 0.01-30A(VAC-1030A); 0.1-100A(VAC-1100A); 0.1-300A(VAC-4300A)
Current Accuracy: 0.01A(VAC-1030A); 0.1A(VAC-1100A/VAC-4300A)
Current Error: (+/-)2%+5 figures
Power Measuring Range: 0-200KW
Capacity Measuring Range: 0-2000KAH
Watt Measuring Range: 0-4000KWH
Time Measuring Range: 0-999 Days
Address Range: A01-A99
Wireless Channel Setting Range: A-Z
Decimal display section will change automatically as data bits shift, for example, it display as 00.000AH, 
when the display exceeds 100AH, the display becomes 000.00AH
NCP: 0.01-30A(VAC-1030A); 0.1-100A(VAC-1100A); 0.1-300A(VAC-4300A)
OCP: 0.01-30A(VAC-1030A); 0.1-100A(VAC-1100A); 0.1-300A(VAC-4300A)
OVP: 0.01-120V(VAC-1030A/VAC-1100A); 0.01-400V(VAC-4300A)
LVP: 0.01-120V(VAC-1030A/VAC-1100A); 0.01-400V(VAC-4300A)
Display: LCD display
Time Delay Protection: 0-10S
Measurement Power Consumption: 0.4W
Display Power Consumption: 0.5W
Sampling Rate: 5 times/s
Communication Distance: 10m for single group in open area
Meter Power Supply: USB DC 5V or DC 10-30V
USB Cable Length: 3m
Meter Size: 76 * 43 * 23mm / 3 * 1.7 * 0.9in
Meter Weight: 37g / 1.32oz
Measuring Module Size: 91 * 59 * 50mm / 3.58 * 2.32 * 1.97in
Measuring Module Weight: 133-271g / 4.71-9.58oz
Package Size: 13 * 11 * 9cm / 5.12 * 4.33 * 3.54in
Package Weight: 340-480g / 12-17oz

Package List:
1 * Wireless DC Voltmeter 
1 * Measuring Module Board
1 * 3m USB Expansion Cable

English User Manual:

Customer Questions & Answers

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How to install and use

  • Connect the Pos (+) voltage source (battery, whatever) to the Pos (+) side of your load (light, motor, whatever). Connect the Neg (-) side of the load to the large meter terminal that has the small RED wire attached. Connect the other terminal which has the small BLACK wire attached to the Neg (-) voltage source (Fig … see more Connect the Pos (+) voltage source (battery, whatever) to the Pos (+) side of your load (light, motor, whatever). Connect the Neg (-) side of the load to the large meter terminal that has the small RED wire attached. Connect the other terminal which has the small BLACK wire attached to the Neg (-) voltage source (Fig A). This measures current in amps. Looking with the terminal block on the left, attach a wire from the top most terminal to the Pos (+) voltage source. This measures voltage in volts (Fig B): Fig A. Source (+) --> (+) Load (-) --> (Red) Meter (Blk) --> Source (-). Fig B. Top Terminal on Block (Vin) --> Voltage source Pos (+). Wattage is calculated by the meter internally. The display can be hardwired using the enclosed USB cable. If you want a wireless meter connection, open the back of the display and connect the enclosed jumper wire to the circuit board. Connect the wire ends to a voltage source (Red wire Pos (+), Black wire Neg (-). When current goes away from the Pos source the amperage is positive. When current flows into the source, the amperage is negative. You will have to figure out Over Voltage, and Over Current on your own. I don't use it. I hope this helps. The instructions provided with the meter are a poor translation of Chinese and make something simple very complicated. see less

    By Joel W.… on October 30, 2017


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  • By ***

    December 9, 2018

    Habe es an einem Akku im Wohnwagen installiert. Misst alles sehr genau. Wie viel verbraucht wird kann man sehen und auch wie stark geladen wird . Am besten ist der Schalter zum Fernausschalten. Bei längerem nicht Gebrauch ist aber ein trennen vom Akku sinnvoll, da das Messgerät zwar wenig aber doch etwas verbraucht. Für den Preis schon fast geschenkt.

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  • By f***5

    March 6, 2018

    Fast shipment! Excellent quality! Great communication! Overall A+++

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  • By Rocco Volturo

    December 1, 2017

    Oggetto di piccole dimensioni ma funzionale , difficoltà per mancanza d'istruzioni di montaggio in italiano , ma alla fine con tanta pazienza e tenacia si è riusciti ad ottenere risultati sperati. Ottimo lettore di tensione , corrente e potenza .Acquisto consigliato.

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  • By Tukano

    November 22, 2017

    Ottimo ma difficile da istallare x istruzioni insufficienti per non esperti elettrotecnici e non in italiano. Bello su camper x bidirezionalita

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  • By stefano baldi

    November 21, 2017

    Un oggettino davvero interessante. Misuratore multifunzione con contatore dell'energia progressivo e istantaneo. Il display lo immaginavo un po' più grande, ma tutto sommato va bene lo stesso. Facile il cablaggio elettrico, un po' meno le istruzioni in , chiamiamolo coraggiosamente "inglese" (una traduzione di google dal cinese all'inglese, che risulta alquanto sconclusionata). Per i cablaggi bastano i disegni. Tarature e impostazioni molto intuitive. Dimenticavo: l' ho confrontato in tensione e in corrente con un multimetro professionale. Tensione precisa al centesimo. Corrente precisa oltre 1,5 A, sotto , più ci si avvicina allo zero più aumenta l'errore (a 0.700 a leggeva 0.988) Per quello che costa offre sicuramente molto.

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  • By W***P

    September 19, 2017

    Ottimo prodotto, trasmissione dati wireless abbastanza sicura. misura della corrente , della tensione , e della potenza soddisfacente. ricevitore alimentato a 12 v.

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  • By Mulinaro

    September 12, 2017

    A prima vista sembra un prodotto valido . in compenso però non ho capito come si installa : Vediamo se mi date una mano. Lo strumento è composto da due elementi piu il cavo tipo USB Strumento sensore (scusate la definizione ) Strumento di visualizzazine . penso di cablarlo così : I due cavi negativo e positivo del generatore eolico li inserisco nei morsetti IN (+ -) Dalla batteria faccio uscire due cavi che li inserisco in OUT (+ -) collego il "sensore" con il visualizzatore mediante cavo USB ( sembra che sia possibile anche via wirless ma per ora non interessa . Ho due dubbi : 1) il cavetto Nero -Rosso ( + -) dotato di micromorsetto che inserisco nel visualizzatore dove lo cablo ? 2) Nellla morsettiera tipo componibile a due posti (verde) del "sensore" cosa ci devo inserire ? allego uno schema di come dovrei cablarlo .. se ho sbagliato ditemelo per cortesia .Grazie

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  • By Giu

    August 22, 2017

    Funktioniert tadellos und auf Anhieb. Gebrauchsanleitung ist etwas nun ja, einfach gestrickt und vielleicht nicht auf dem ersten Blick verständlich. Aber dank Internet kommt man schnell auf den Trichter. Ich nutze es rein zur Spannungsanzeige und dem momentanen Stromverbrauch bei einem selbst gebauten e-Roller. Funktioniert und ich bin zufrieden. Das Display ist gut ablesbar. Die Folientaster sind wahrscheinlich nicht unbedingt langlebig aber das wird sich weisen. Einzig die Gewinde am Shunt könnten gern etwas länger sein. Bei meinen Kabelschuhn für 70mm² bekommt man die Muttern gerade noch so drauf. Sowie das Plastikgehäuse am Shunt, gerade die Ösen zum festschrauben an den Untergrund dürften etwas massiver/ hochwertiger ausfallen. Wenn man hier am Kabel zieht oder sonst druck aufbringt wird das Gehäuse nicht lange standhalten. Auf alle Fälle ist das zumindest eine Schwachstelle.

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  • By lupoalba

    August 14, 2017

    Non l'ho ancora installato, ma la qualita' percepita e' buona, credevo che la parte display fosse piu grande, ma va bene anche cosi. Appena lo installo aggiornero' la recensione.

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  • By GarZ

    July 12, 2017

    Confrontato fino a 10 A con un multimetro professionale (oltre 10A non può misurare) e riporta gli stessi valori. Funzione Wireless funziona senza problemi, max distanza non testata. Provata a 50 cm. Alimentazione del Display tramite cavo USB collegato al modulo di misura (quello con la resistenza di shunt) oppure tramite un classico alimentatore USB per cellulari. Ha un uscita a transistor per collegare un relè esterno per : - Limite Tensione Alta / Bassa - Limite Corrente Alta / Bassa Le viti della Resistenza di Shunt sono M8 (8 mm), serve un Terminale ad Occhiello con foro da 8.4 mm per un collegamento migliore.

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  • By j***8

    July 3, 2017

    1 month to country s.a. item is as advertised. wireless range ok

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  • By r***l

    June 10, 2017

    Thankyou very happy good comunications with seller thanks much appreciated

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  • By Janni

    May 24, 2017

    ist dieses DING perfekt. Vielleicht nicht so akkurat wie es für eine NASA-Expedition ausreichen würde, fürs Wohnmobil jedoch perfekt. Das einzige was ich gemägel ist die Anleitung. Die dürfe mal auf Deutsch und ausführlicher verfasst werden.

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  • By m***l

    May 23, 2017

    Second time I have bought and just as happy this time around. Will buy again.

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  • By c***2

    May 10, 2017

    very, very fast! 10 days from China!!! perfect! thank you very much!

    Is this helpful? (0) (0)

  • By a***i

    April 11, 2017

    A good, compact (and low cost) product. Fast shipping. Thanks...

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  • By Dieter Rieck

    April 10, 2017

    Info unzufrieden Produkt sehr gut. Keine Meßanleitung, ein aus einem engl. Manual herausgetrennte Doppelseite als Ersatz. Diese Praktik kann keinesfalls befriedigen.

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  • By Marcus Hinz

    March 25, 2017

    Bei mir kommt das "Multimeter" in den Wohnwagen zur Batteriekontrolle und zum Schutz derselben. Eingebaut ist es noch nicht, aber am Labornetzteil, nach der super schnellen Lieferung, musste ich es dann doch schon mal testen. Vorweg, ja die Anleitung ist nur auf Englisch. Für mich reichte das, zudem finde ich das alles ziemlich selbserklärend. Angeklemmt und der erste Eindruck, wau - schönes gut ablesbares Display. Es ist alles schnell einzustellen (Überspannung, Unterspannung, Kapazität...), alles macht für diesen Preis einen recht hochertigen Eindruck. Die angezeigten Werte sind mit meinem Labornetzteil nahezu übereinstimmend. Also von mir Kauempfehlung!

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  • By Wolfgang

    March 13, 2017

    Ich habe aber einige Ungereimtheiten, ev. liegt das aber an meinem Verständnis. Ich habe nach Anweisung die Batterie an IN+ und IN- angeschlossen. Nun wird aber beim Laden der Batterie-Ladestrom negativ angezeigt, die Kapazität der Batterie wird weniger. Und beim Entladen steigt die Kapazität (AH). Das müsste doch genau andersherum sein!

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  • By ralf asmussen

    October 12, 2016

    Nach erfolgter Reklamation hat mir der Verkäufer anstandslos (!) ein zweites Gerät geschickt und obwohl -Übersee- keine Versandkosten oder Rücksendung gefordert. Ich nenne das kundenfreundlich hoch drei !!! Die Anzeige und das Messgerät arbeiten einwandfrei und zeigen bessere und genauere Daten als mein Verbautes. Die Bedienung ist trotz englischem kinderleicht.

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