Now available from PMD Way are these great value little digital AC voltmeters. Ideal for placing anywhere you need to monitor the mains or other AC voltage. They're 22mm in diameter and are easy to wire up. You can choose from red, white, blue, green or yellow. Free delivery, worldwide. Specifications: Measurement voltage: 60~500V AC MTBF Typically over 30,000 hours Environmental Temperature: -25+55; Working under vibration frequency 2-80Hz, acceleration at 0.7g; Relative Air Humidity: ≤98%; Pollution rank is three grade and installation category is III; Protection Degree: Head IP65 Voltage of working frequency: 2.5kV (AC valid value), 1min; Leakage Index: CT1≥100; Frequency: AC 50-60Hz Don't forget to check out our full range of display products if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.