{"product_id":"sonoff-spm-4relay-smart-power-monitoring-switch-4-channel","title":"SONOFF Smart Power Monitoring Switch 20A\/Gang | 4-Channel Relay Module | DIN Rail | SPM-4RELAY","description":"\u003cp\u003eThe \u003cstrong\u003eSONOFF SPM-4Relay\u003c\/strong\u003e is the 4-channel relay unit of the SONOFF Smart Stackable Power Meter (SPM) system. It gives you \u003cstrong\u003e4 isolated channels of up to 20A each (80A total)\u003c\/strong\u003e in a DIN rail housing, so you can switch and monitor separate circuits or high-power devices.\u003c\/p\u003e\n\u003cp\u003eConnected to the SPM-Main unit, it shows real-time current, voltage and power for each channel in the eWeLink app and cuts power automatically on overload. One SPM-Main connects \u003cstrong\u003eup to 32 SPM-4Relay units\u003c\/strong\u003e, and the Main unit's microSD card stores over 20 years of power data and up to 20,000 operation logs per device.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e the SPM-4Relay works together with the SPM-Main unit. The Main unit must be connected to at least one SPM-4Relay to function.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4 isolated relay channels, 20A per channel and 80A total maximum\u003c\/li\u003e\n\u003cli\u003eReal-time current, voltage and power monitoring per channel in the eWeLink app\u003c\/li\u003e\n\u003cli\u003eOverload protection that cuts power automatically to protect your devices\u003c\/li\u003e\n\u003cli\u003eStackable system: up to 32 SPM-4Relay units on one SPM-Main (up to 128 channels)\u003c\/li\u003e\n\u003cli\u003ePower data and operation logs stored on the SPM-Main microSD card (8–32GB SDHC), with quick export of consumption reports\u003c\/li\u003e\n\u003cli\u003eRS-485 connection to the SPM-Main unit\u003c\/li\u003e\n\u003cli\u003eRemote on\/off control, timers, schedules and scenes in the eWeLink app\u003c\/li\u003e\n\u003cli\u003eDIN rail mounting in distribution boards and control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWorks With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired main unit:\u003c\/strong\u003e \u003ca href=\"\/products\/sonoff-spm-main-smart-power-monitoring-hub-din-rail-central\"\u003eSONOFF SPM-Main\u003c\/a\u003e (one SPM-Main controls up to 32 SPM-4Relay units)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSPM-4Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSONOFF Smart Stackable Power Meter (SPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100-240V~ 50\/60Hz 20A\/Gang 80A\/Total Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100-240V~ 50\/60Hz 20A\/Gang 80A\/Total Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection to Main Unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS-485 (SPM-Main required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWi-Fi (via SPM-Main)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e802.11 b\/g\/n 2.4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Storage (via SPM-Main)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003emicroSD card, 8GB–32GB SDHC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eeWeLink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShell Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC V0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10°C ~ 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e143 × 90 × 66 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, FCC, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the SONOFF SPM-4Relay?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePer-circuit control and monitoring of high-power loads up to 20A per channel\u003c\/li\u003e\n\u003cli\u003eScales from 4 to 128 channels as your installation grows\u003c\/li\u003e\n\u003cli\u003eBuilt-in overload protection for safer operation\u003c\/li\u003e\n\u003cli\u003eLong-term local data storage for energy reports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eDownloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0954\/2356\/2044\/files\/SONOFF-SPM-Main-SPM-4Relay-User-Manual.pdf?v=1791824300\" target=\"_blank\" rel=\"noopener\" download style=\"display:inline-block;margin:4px 8px 4px 0;padding:10px 20px;background:#1a1a1a;color:#ffffff;border-radius:6px;text-decoration:none;font-weight:600;\"\u003e⬇ Download User Manual (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty from the Official Distributor.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/9bmGjQ15biQ\" title=\"SONOFF Smart Stackable Power Meter V1.2.0 Introduction\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"SONOFF","offers":[{"title":"Default Title","offer_id":67842588475642,"sku":"SPM-4Relay","price":58.0,"currency_code":"JOD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/3489\/6378\/files\/Power_Meter_77cee137-a976-47f4-9d7a-ab1e3111a3cb.png?v=1792707268","url":"https:\/\/tmain-jo.com\/products\/sonoff-spm-4relay-smart-power-monitoring-switch-4-channel","provider":"TMAIN","version":"1.0","type":"link"}