{"product_id":"kerui-m558-wireless-doorbell-32-melodies-adjustable-volume","title":"Kerui M558 Wireless Doorbell 32 Melodies Adjustable Volume","description":"\u003cdiv\u003e\n\u003ch1\u003eKerui M558 Wireless Doorbell With 32 Songs Adjustable Volume Easy Installation\u003c\/h1\u003e\n\u003cp\u003eUp to 150 meters in open space, the Kerui M558 delivers reliable wireless signaling with 4-level volume and a choice of 32 melodies (the doorbell button offers 33 tones).\u003c\/p\u003e\n\u003cp\u003eDoorbell operates on 220V AC and the button uses a CR2032 battery. It can learn up to 30 transmitters and supports 1527\/2262 code chips. Suitable for homes, villas, shops, hotels, and offices thanks to its strong signal and broad coverage.\u003c\/p\u003e\n\u003cp\u003ePlug-and-play setup: the doorbell connects to power, and the button is fixed with double-sided tape. A built‑in backlight flashes when pressed for visibility, and the system supports multi-accessory expansion to fit larger spaces.\u003c\/p\u003e \u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eDoorbell power: 220V AC; Button power: CR2032 battery\u003c\/li\u003e \u003cli\u003eRange: up to 150m open space (about 500ft)\u003c\/li\u003e \u003cli\u003eTones: up to 32 melodies; doorbell button supports up to 33 tones\u003c\/li\u003e \u003cli\u003eVolume: 4 levels, no mute mode\u003c\/li\u003e \u003cli\u003eTransmitters: learn up to 30 transmitters\u003c\/li\u003e \u003cli\u003eCode compatibility: supports 1527\/2262 code chips\u003c\/li\u003e \u003cli\u003eInstallation: plug‑and‑play; button fixed with double‑sided tape\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eQ\u0026amp;A\u003c\/h3\u003e\n\u003col\u003e \u003cli\u003e\n\u003cstrong\u003eWhat is the Kerui M558?\u003c\/strong\u003e\u003cbr\u003eA wireless doorbell system with a powered door unit, battery button, multiple tones, and room‑scale expandability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHow far does it reach?\u003c\/strong\u003e\u003cbr\u003eUp to 150 meters in open space (about 500 feet).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHow many melodies are available?\u003c\/strong\u003e\u003cbr\u003eUp to 32 melodies on the doorbell; the button offers up to 33 tones.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCan I add more than one transmitter?\u003c\/strong\u003e\u003cbr\u003eYes, it can learn up to 30 transmitters for a multi‑door setup.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHow is it powered?\u003c\/strong\u003e\u003cbr\u003eDoorbell unit uses 220V AC; the button uses a CR2032 battery.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHow easy is installation?\u003c\/strong\u003e\u003cbr\u003ePlug‑and‑play doorbell; button adheres with double‑sided tape.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWhere is it suitable?\u003c\/strong\u003e\u003cbr\u003eHomes, villas, shops, hotels, and offices seeking reliable wireless alerts.\u003c\/li\u003e\n\u003c\/ol\u003e \u003ch2\u003eBenefits\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eLong-range reliability up to 150m open space\u003c\/li\u003e \u003cli\u003e4-level volume with 33 tone options on the button to minimize neighbor overlap\u003c\/li\u003e \u003cli\u003eSupports up to 30 transmitters for multi‑door configurations\u003c\/li\u003e \u003cli\u003e1527\/2262 code chip compatibility for flexible pairing\u003c\/li\u003e \u003cli\u003ePlug‑and‑play installation for quick setup\u003c\/li\u003e \u003cli\u003eButton backlight flashes on press for visibility\u003c\/li\u003e \u003cli\u003eSuitable for a variety of spaces: home, villa, shop, hotel, or office\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHooks\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReach every corner with a 150m open-space range\u003c\/li\u003e \u003cli\u003e32 melodies (33 tones on the button) to fit your sound preference\u003c\/li\u003e \u003cli\u003ePlug‑and‑play simplicity—no complex wiring\u003c\/li\u003e \u003cli\u003eLearn up to 30 transmitters for a multi‑door system\u003c\/li\u003e \u003cli\u003eFour adjustable volumes for any environment\u003c\/li\u003e \u003cli\u003eBacklight flashes to catch attention in low light\u003c\/li\u003e \u003cli\u003eCE‑certified reliability for homes, villas, shops, and offices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"stepyours.com","offers":[{"title":"1 receiver 2 button \/ UK Plug","offer_id":45509055610989,"sku":"14:193#1 receiver 2 button;200009209:201447607","price":22.84,"currency_code":"USD","in_stock":true},{"title":"1 receiver 2 button \/ AU Plug","offer_id":45509055643757,"sku":"14:193#1 receiver 2 button;200009209:201447606","price":23.1,"currency_code":"USD","in_stock":true},{"title":"2 receiver 1 button \/ US Plug","offer_id":45509055676525,"sku":"14:175#2 receiver 1 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