{"product_id":"ac-60-500v-led-digital-voltmeter-22mm-panel-mount-voltage-indicator","title":"AC 60–500V LED Digital Voltmeter 22mm Panel Mount Voltage Indicator","description":"\u003ch2\u003eAC 60–500V LED Digital Voltmeter Tester – 22mm Panel Mount Signal Light\u003c\/h2\u003e\n\u003cp\u003eMonitor AC voltage with precision and confidence using this compact \u003cstrong\u003eLED Digital Voltmeter Tester\u003c\/strong\u003e (Model: AD16-22FVA). Designed for panel mounting in electrical control cabinets, switchboards, and DIY electrical projects, this 22mm indicator light displays live voltage readings on a bright digital screen — making it easy to verify your circuit's status at a glance.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in five vivid LED colours — \u003cstrong\u003eGreen, Blue, Red, Yellow, and White\u003c\/strong\u003e — this pilot lamp doubles as a visual status signal and a precise voltage meter, combining functionality with clear visual feedback in one tidy 22mm cutout device.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\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 60V – 500V, suitable for a broad range of industrial and domestic electrical applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Display:\u003c\/strong\u003e Clear, digital-only readout for fast and accurate voltage readings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e22mm Panel Cutout:\u003c\/strong\u003e Standard panel-mount diameter fits most electrical enclosures and control panels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 LED Colours Available:\u003c\/strong\u003e Green, Blue, Red, Yellow, White — choose the colour that suits your project or control panel layout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo External Battery Required:\u003c\/strong\u003e Powered directly from the AC circuit being measured\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust Environmental Rating:\u003c\/strong\u003e Operating temperature -25°C to +55°C; relative humidity ≤98%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Dielectric Strength:\u003c\/strong\u003e Working frequency voltage of 2.5kV AC (valid value), tested for 1 minute\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Use:\u003c\/strong\u003e Ideal for electrical DIY projects, industrial panels, machinery, and control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAD16-22FVA\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 60V – 500V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC (self-powered from measured circuit)\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 Only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePanel Cutout Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Colours\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreen, Blue, Red, Yellow, White\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-25°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤98%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDielectric Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5kV AC, 1 min\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\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis voltmeter is a great choice for electricians, electrical engineers, hobbyists, and DIY enthusiasts who need a reliable, easy-to-read panel-mount voltage indicator. Whether you're building a custom control panel, upgrading electrical switchgear, or working on an automation project, the AD16-22FVA delivers accurate AC voltage monitoring in a compact, no-fuss package.\u003c\/p\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\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the voltage measurement range of this LED digital voltmeter?\u003c\/h4\u003e\n\u003cp\u003eA: This digital voltmeter measures AC voltage in the range of 60V to 500V, making it suitable for a wide variety of electrical panel and control system applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the AD16-22FVA digital voltmeter require an external battery or power supply?\u003c\/h4\u003e\n\u003cp\u003eA: No external battery or separate power supply is needed. The voltmeter is self-powered directly from the AC circuit it is measuring, simplifying installation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What panel cutout size is required to install this voltmeter indicator light?\u003c\/h4\u003e\n\u003cp\u003eA: This voltmeter requires a standard 22mm panel cutout, which is a very common size for pilot lamps and indicator lights in electrical enclosures and control panels.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this voltmeter suitable for outdoor or harsh-environment use?\u003c\/h4\u003e\n\u003cp\u003eA: The AD16-22FVA is rated for operating temperatures between -25°C and +55°C and can handle relative humidity up to 98%, making it suitable for demanding environments including industrial and semi-outdoor installations.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the voltage measurement range of this LED digital voltmeter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This digital voltmeter measures AC voltage in the range of 60V to 500V, making it suitable for a wide variety of electrical panel and control system applications.\"}}, {\"@type\": \"Question\", \"name\": \"Does the AD16-22FVA digital voltmeter require an external battery or power supply?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No external battery or separate power supply is needed. 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