Review on 📊 High-Quality SMAKN 2-Wire Green LED Panel Digital Display Voltmeter for DC Voltage Range 4.0-30V by Derek Dolla

Bought to fit my 50/10/2 amp handheld chargers. It just got a lot easier to charge the batteries of 5 vehicles. Now I don't have to carry a multimeter along with a charger. I installed a CMAKH voltmeter (love the name) on the front right under the original ammeter. Looks great, especially at night I can remotely check where the voltage is. Both SMAKN VMs I received were 0.1V higher than my expensive Greenlea multimeter which was 13.9V. I noticed a variable resistor on the board labeled "VR". A small slotted screwdriver is required for installation, e.g. B. for repairing glasses. I turned it counterclockwise just a few hairs and lost 0.3V on the display so it doesn't take long to fine-tune. Both meters reduced from 14 to 13.9 and everything is fine. The hole required to attach these villains to the panel is 1-25/32" x 1". I could buy more of these to put on my riding mowers just because they look so cool. . Green LED also fits for John Deere!