{"product_id":"12v-20w-electronic-alarm-siren-1-tone","title":"12V 20W Electronic Alarm Siren | 1-Tone Loud Horn for Security Systems","description":"\u003ch2 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003ePiercing 1-Tone Alarm for Maximum Security\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eThis 20W electronic siren delivers a continuous, high-decibel single-tone alarm that commands immediate attention and deters potential intruders. Unlike standard low-power buzzers, the 20-watt internal speaker projects sound over long distances, making it highly effective for noisy industrial environments, large warehouses, or outdoor perimeters. When integrated with a motion sensor or access control panel, it provides an unmistakable auditory warning the moment a security breach is detected.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eEasy 2-Wire Installation \u0026amp; Versatile Mounting\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eWiring this alarm horn into your existing security network is incredibly straightforward thanks to the pre-stripped 50cm red and black pigtail cable. The unit features a robust, adjustable metal bracket with multiple pre-drilled holes, allowing you to mount it securely to walls, ceilings, or vehicle chassis using standard screws. Its compact 8cm x 7.5cm footprint ensures it can be installed discreetly under eaves or inside security junction boxes without drawing unwanted attention.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003ePro Tip from Our Technicians\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eAlways ensure your 12V DC power supply can handle the current draw of a 20W device (we recommend a power adapter rated for at least 12V 2A). Our Sham Shui Po security installation specialists remind you to strictly observe polarity during wiring: the Red wire must connect to Positive (+), and the Black wire to Negative (-). Reversing the polarity will prevent the siren from sounding and may damage the internal circuitry.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":48245005123735,"sku":"21PS001972","price":166.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/files\/12v-20w-electronic-alarm-siren-security.jpg?v=1789034474","url":"https:\/\/scccltd.com\/en-tw\/products\/12v-20w-electronic-alarm-siren-1-tone","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}