{"product_id":"spm001-100a-led-voltmeter-ammeter-kwh-wattmeter-power-factor-meter","title":"SPM001 100A LED Voltmeter Ammeter KWH Wattmeter | Reset","description":"\n\u003ch2\u003eSPM001 Multi-Functional LED Voltmeter Ammeter KWH Meter with Power Factor \u0026amp; Reset\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSPM001 Multi-Functional LED Panel Meter\u003c\/strong\u003e is a compact, high-precision electrical monitoring instrument that simultaneously measures AC voltage, AC current, active power, electric energy (KWH), and power factor — all displayed on bright, easy-to-read LED digits. Whether you're managing a workshop, monitoring industrial equipment, or building a custom electrical panel, this all-in-one wattmeter gives you complete visibility into your electrical circuit at a glance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Parameter Measurement:\u003c\/strong\u003e Simultaneously tracks AC voltage (80V–300V or 200V–450V), AC current (0–100A), active power (0–30,000W), electric energy (0.000–9999.9 KWH), and power factor (0.000–1.000).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Color LED Display:\u003c\/strong\u003e Four red 0.32\" LEDs for voltage, current, and power factor; five green 0.32\" LEDs for active power and electric energy — clear readouts in any lighting condition.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e ±1% (±2 digits) with auto-ranging current accuracy — 0.01A precision below 10A and 0.1A above 10A.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Refresh Rate:\u003c\/strong\u003e Updates 2 times per second for near real-time monitoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResettable KWH Counter:\u003c\/strong\u003e Press and hold the SAM button for 5 seconds while in KWH display mode to reset the energy counter and begin a new accumulation period.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-Volatile Memory:\u003c\/strong\u003e Retains KWH data when power is lost and continues accumulating from the saved value on restart.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Panel-Mount Design:\u003c\/strong\u003e Overall dimensions 79×43×48mm; installation cutout 76×39mm — fits standard DIN panel openings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Range Options:\u003c\/strong\u003e Available for standard (AC 80–300V) or high-voltage (AC 200–450V) applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80V–300V \/ 200V–450V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC Current Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–100A (via current transformer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eActive Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–30,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectric Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.000–9999.9 KWH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.000–1.000\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1% ±2 digits\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRefresh Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 times\/second\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e79 × 43 × 48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Cutout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e76 × 39 mm\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  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eConnect the secondary wire of the current transformer (green wire) to the blue terminal, and route the load wire through the hole in the current transformer as shown in the diagram.\u003c\/li\u003e\n  \u003cli\u003eConnect the measuring voltage source to the green terminal.\u003c\/li\u003e\n  \u003cli\u003eOn power-up, the meter displays voltage, current, and power factor. Press the \u003cstrong\u003eSAM\u003c\/strong\u003e button to cycle through active power → electric energy → power factor in turn.\u003c\/li\u003e\n  \u003cli\u003eTo reset the KWH counter: navigate to the electric energy display (KWH indicator lit), then press and hold SAM for 5 seconds until the value resets to zero.\u003c\/li\u003e\n  \u003cli\u003eOn power loss, the KWH value is saved automatically and resumes accumulation on next power-up.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠ Important:\u003c\/strong\u003e Do NOT swap the voltage input (green terminal) and current transformer secondary (blue terminal) connections. Incorrect wiring can permanently damage the meter. Always verify wiring before powering on.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× SPM001 LED Voltmeter \/ Ammeter \/ KWH \/ Wattmeter Panel Meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor guidance on electrical safety and best practices when working with panel-mounted instruments, visit the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the AC 80–300V and AC 200–450V versions of the SPM001 voltmeter ammeter?\u003c\/h4\u003e\n\u003cp\u003eA: The two versions are designed for different voltage ranges. The AC 80–300V model suits standard residential and commercial circuits (110V–240V), while the AC 200–450V version is intended for higher-voltage industrial or three-phase applications. Choose the version that matches your circuit's operating voltage for accurate readings.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the SPM001 KWH meter require an external current transformer to measure current?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The SPM001 uses an external current transformer (CT) for its 0–100A current measurement. You route the load-carrying wire through the CT's center hole and connect the CT's secondary output to the blue terminal on the meter. This is a standard and safe method for measuring high AC currents in panel meters.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Will the SPM001 lose its accumulated KWH energy reading if the power goes off?\u003c\/h4\u003e\n\u003cp\u003eA: No. The SPM001 features non-volatile memory that saves the KWH energy total when power is removed. When the meter powers back on, it resumes accumulating energy from the last saved value, ensuring no energy data is lost during outages or shutdowns.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I reset the electric energy (KWH) counter on the SPM001?\u003c\/h4\u003e\n\u003cp\u003eA: Press the SAM button to cycle the green LED display until the KWH energy screen is active (the KWH indicator light will be on). Then press and hold the SAM button for approximately 5 seconds. The counter will reset to zero and begin a new accumulation period.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the AC 80–300V and AC 200–450V versions of the SPM001 voltmeter ammeter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The two versions are designed for different voltage ranges. 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