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  • 14/10/2020

    Works as expected. Starts working at a supply voltage of 3.3V. It then draws 6.4 mA. At 5V supply the consumption is 10 mA and it remains at 10 mA up to at least 30V. Accuracy is not the best. For 3.3V with 3.3V supply voltage the error was 12%. For voltage above 4V the accuracy is about 1%, it is however trimmable by some trimpots that are accessible.

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  • 28/02/2020

    The factory calibration of the current turned out to be just fine - there are no deviations in the whole range. Shunt 5m. Non-linear scale - low voltages underestimate, high voltages overestimate (instead of 5.7 shows 5.6V; instead of 24.1 shows 24.3 In ). Measurements were made with external power supply of 5V. The refresh rate is low, about twice per second. ----- the factory current calibration was just fine - there are no deviations in the entire range. shunt of 5 mω. The voltage scale is non-linear - low voltages are underestimated, high voltages are overstated (instead of 5.7, it shows 5.6 V; instead of 24.1, it shows 24.3 V). Measurements were carried out with an external power supply of 5V. The update rate is low, about two times per second.

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  • 04/01/2021

    Fast shipping, on time delivery and in good packaging, I ordered 3 pieces of the product to combine with some of my power supply projects. All seem to abe OK. I have tested the product and itlling is working very good as described in selling page. Give some attention to connection diagram appearing in selling page that is very helpful. Vey satisfied ! Γρήγορη αποστολή και παράδοση στον αναμενόμενο χρόνο. Παρήγγειλα 3 τεμάχια που έφτασαν σε σωστή συσκευασία και φαίνονται εντάξει, έτοιμα να τα συνδυάσω σε μερικές κατασκευές τροφοδοτικών. Δοκίμασα το προϊόν και δουλεύει όπως περιγράφεται στην σελίδα παραγγελίας. Απλά θέλει προσοχή στην συνδεσμολογία που φαίνεται στις εικόνες στην σελίδα πώλησης. Πολύ ικανοποιημένος από την αγορά !

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  • 25/05/2019

    Thanks Geekcrait for useful gadgets

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  • 26/12/2019

    Je donne une note à 4 étoile au global car pas de notice et je trouve les branchements pas évidents ! La photo 2 donne comment brancher l'alimentation de fonctionnement du module, les deux fils rouge et noir fins suffisent à alimenter le module en 12 volts par exemple comme sur la photo. Le pack en avant sur la photo est celui que le voltmètre mesure, à savoir 6 volts environ, et il faut brancher le fil noir (gros) sur la borne mins du pack, et le fil jaune fin) sur le plus du pack. la lecture est correcte : 6 volts. Par contre la prise d'intensité est plus compliquée et se fera en branchant correctement le (gros) fil rouge !

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  • 21/07/2019

    Voltmeter ammeter, nice product

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  • 06/09/2019

    good product.

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  • 28/01/2020

    Simple wiring

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  • 12/01/2020

    Bought to use as part of teaching my children about renewable energy. The photo shows it connected to a 6v solar panel. The current is showing 0.0A because the load from the LED is very low.

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  • 27/10/2019

    Mini digital Voltmeter and Amp, all Ok.

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