{"product_id":"22mm-led-digital-panel-voltmeter-ac-12-500v-square-indicator","title":"22mm LED Digital Panel Voltmeter AC 12–500V | 5 LED Colors","description":"\u003ch2\u003e22mm LED Digital Voltmeter Panel Indicator – AC 12–500V\u003c\/h2\u003e\n\u003cp\u003eMonitor AC voltage at a glance with this compact \u003cstrong\u003e22mm square panel voltmeter\u003c\/strong\u003e. Featuring a bright LED digital display, it mounts cleanly into any standard 22mm panel cutout, making it ideal for control panels, electrical enclosures, generator boards, DIY power projects, and workshop setups. Available in five vibrant LED colours — Red, Blue, Yellow, Green, and White — so you can match your build or colour-code multiple circuits effortlessly.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Measures AC 12–500V, covering most residential and industrial AC circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital LED Display:\u003c\/strong\u003e Clear, easy-to-read numerical readout even in low-light environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e22mm Square Panel Mount:\u003c\/strong\u003e Fits standard 22mm panel cutouts for fast, secure installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 LED Colour Options:\u003c\/strong\u003e Red, Blue, Yellow, Green, and White — great for colour-coded panel builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo External Battery Required:\u003c\/strong\u003e Powered directly from the measured AC line — no extra wiring needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Durable:\u003c\/strong\u003e Rugged housing suits both DIY hobby projects and professional electrical panels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e AD16-22FSV\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC Voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 12–500V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital LED\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePanel Cutout Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22mm Square\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Colours\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed, Blue, Yellow, Green, White\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAD16-22FSV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrical control panels and enclosures\u003c\/li\u003e\n  \u003cli\u003eDIY generator and inverter builds\u003c\/li\u003e\n  \u003cli\u003eWorkshop power distribution boards\u003c\/li\u003e\n  \u003cli\u003eHome automation and electrical monitoring projects\u003c\/li\u003e\n  \u003cli\u003eIndustrial machinery voltage display\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What AC voltage range does this panel voltmeter measure?\u003c\/h4\u003e\n\u003cp\u003eA: This 22mm LED digital voltmeter measures AC voltages from 12V up to 500V, making it suitable for a wide variety of residential, commercial, and DIY electrical applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the voltmeter need a separate power supply or batteries?\u003c\/h4\u003e\n\u003cp\u003eA: No separate power supply or batteries are required. The voltmeter draws its operating power directly from the AC line being measured, simplifying installation and reducing wiring complexity.\u003c\/p\u003e\n\u003ch4\u003eQ: What size panel hole do I need to mount this voltmeter?\u003c\/h4\u003e\n\u003cp\u003eA: The voltmeter is designed to fit a standard 22mm square panel cutout. Simply drill or punch a 22mm square hole in your enclosure or panel, insert the unit, and secure it with the included mounting hardware.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I choose the LED display colour?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This voltmeter is available in five LED display colours — Red, Blue, Yellow, Green, and White — allowing you to colour-code multiple circuits or simply match the aesthetic of your build.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What AC voltage range does this panel voltmeter measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This 22mm LED digital voltmeter measures AC voltages from 12V up to 500V, making it suitable for a wide variety of residential, commercial, and DIY electrical applications.\"}}, {\"@type\": \"Question\", \"name\": \"Does the voltmeter need a separate power supply or batteries?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No separate power supply or batteries are required. 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