{"product_id":"eufy-security-indoor-siren-e20-110-db-alarm","title":"eufy Security Indoor Siren E20 110 dB Alarm","description":"\u003cp\u003e\u003cstrong\u003eThe eufy Indoor Siren E20 is a compact, HomeBase‑linked alarm that delivers a 110 dB alert with a rechargeable backup battery and multiple mounting choices for reliable whole‑floor notification.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe E20 is designed to expand your eufy Security system by providing a loud, standalone alarm that pairs with a compatible HomeBase unit. It doesn’t function on its own; instead it connects to HomeBase models Mini, 2, 3, or Pro (with specific firmware requirements) and activates when the system detects an event. With a focus on clear sound output, dependable backup power, and versatile installation, this siren helps increase the audible reach of your existing setup.\u003c\/p\u003e\n\n\u003ch3\u003eHow loud is the siren and what area can it cover?\u003c\/h3\u003e\n\u003cp\u003eThe E20 produces up to 110 dB, enough to be heard across a typical single floor of a house or a medium-sized apartment. Sound projection is influenced by room layout and furnishings, but the unit’s output is engineered for fast attention and clear notification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum alarm level: 110 dB for prompt alerts\u003c\/li\u003e\n  \u003cli\u003eDesigned for whole‑floor audibility in common residential layouts\u003c\/li\u003e\n  \u003cli\u003ePlacement affects reach—higher or central positions improve coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat power options and backup does the E20 provide?\u003c\/h3\u003e\n\u003cp\u003eThe siren runs on AC power during normal operation and includes a built‑in rechargeable battery that provides temporary operation during outages. The battery recharges automatically when mains power resumes, so the unit stays ready without manual swapping.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAC‑powered for continuous use with automatic charging\u003c\/li\u003e\n  \u003cli\u003eRechargeable backup battery offers up to 48 hours of emergency operation\u003c\/li\u003e\n  \u003cli\u003eAutomatic recharge when mains power is restored\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install the siren in my home?\u003c\/h3\u003e\n\u003cp\u003eInstallation is flexible to suit different mounting preferences. You can place the E20 on a shelf or table, attach it to a wall using the included 3M adhesive strip for a no‑drill option, or secure it more permanently with screws.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTabletop placement for instant setup\u003c\/li\u003e\n  \u003cli\u003eIncluded 3M adhesive strip for tool‑free wall mounting\u003c\/li\u003e\n  \u003cli\u003eScrew mounting for sturdier, long‑term installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich HomeBase models are compatible and what firmware do they need?\u003c\/h3\u003e\n\u003cp\u003eThe E20 requires connection to an eufy HomeBase; it is not a standalone alarm. Confirm your HomeBase model and firmware version to ensure compatibility before purchase or installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHomeBase Mini: v4.0.5.2 or newer\u003c\/li\u003e\n  \u003cli\u003eHomeBase 2: v3.4.1.2 or newer (models released after 2021)\u003c\/li\u003e\n  \u003cli\u003eHomeBase 3: v3.7.2.6 or newer\u003c\/li\u003e\n  \u003cli\u003eHomeBase Pro: v4.1.4.3 or newer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFinally, the E20 communicates with HomeBase over a robust wireless link that can reach up to 656 ft (200 m) in open air, giving you flexibility to position the siren where it will be most effective within those signal limits.\u003c\/p\u003e\n\n\u003cp\u003eWho is this for? The eufy Indoor Siren E20 is aimed at homeowners and renters who already use or plan to use an eufy HomeBase and want stronger audible alerts across a floor. It fits people who prefer a tamper‑resistant, rechargeable siren with multiple mounting options and extended wireless range, and who will verify HomeBase firmware compatibility before adding it to their security system.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the E20 work without a HomeBase?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The E20 requires a compatible eufy HomeBase (Mini, 2, 3, or Pro) with the specified firmware to operate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the backup battery last during a power outage?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The internal rechargeable battery provides up to 48 hours of backup operation, then recharges automatically when power returns.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"eufy Security","offers":[{"title":"Default Title","offer_id":48413663330461,"sku":"B0G8HR1DJS","price":70.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/eufy-e20-front-view_c0e88e66-6403-44a2-a374-e74cf3cdd567.jpg?v=1781277451","url":"https:\/\/nexoltic.com\/products\/eufy-security-indoor-siren-e20-110-db-alarm","provider":"Nexoltic","version":"1.0","type":"link"}