{"product_id":"18-3-low-voltage-security-sound-alarm-cable-100-ft-plenum-rated","title":"18\/3 Low Voltage Security Sound Alarm Cable 100 ft - Plenum Rated","description":"\u003cp\u003eOur review examines the 18\/3 Low Voltage Security Sound Alarm Cable in a 100 ft spool and finds it best suited for installers and DIYers who need a reliable, plenum-rated cable for low-voltage control systems. The single biggest reason to buy is the combination of stranded bare copper conductors and an aluminum foil shield, which together deliver dependable conductivity and protection from EMI for systems like fire alarms, access control, and public address wiring. In this review the cable stands out for safety compliance and consistent signal integrity in power-limited applications.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Applications:\u003c\/strong\u003e Compatible with fire alarm, security burglar alarm, public address, intercoms and other low-voltage power-limited circuits, making it versatile on job sites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure Copper Conductors:\u003c\/strong\u003e Stranded bare copper conductors provide flexibility and good conductivity for reliable connections and long runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum Foil Shielding:\u003c\/strong\u003e The foil shield helps block electromagnetic interference so sensitive communication and instrumentation signals remain clear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMP Plenum Rating:\u003c\/strong\u003e Plenum-rated CMP\/CL3P\/FT6 construction allows safe installation in air handling spaces such as ceilings and plenum areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300V CL3 Rating:\u003c\/strong\u003e Rated to 300V and compliant with Class 3 power-limited standards, suitable for thermostat, security and audio\/visual low-voltage use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cable is a practical choice for electricians, low-voltage contractors and facilities maintenance teams who need a plenum-rated cable that supports a variety of systems including nurse call, access control, telephone stations and PA systems. The stranded copper and shielding make it particularly useful where runs pass near other electrical equipment or through shared spaces that can introduce EMI.\u003c\/p\u003e\n\u003cp\u003eHome hobbyists and light DIYers can use this product for cabinet lighting or simple security installs, but those who do not require plenum-rated cable or need heavier gauge power conductors should consider alternatives designed for higher current or non-plenum spaces.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood wiring versatility for many low-voltage systems, reducing the need for multiple cable types.\u003c\/li\u003e\n\u003cli\u003eShielding effectively minimizes EMI, which customers noted improves signal stability in sensitive runs.\u003c\/li\u003e\n\u003cli\u003eStranded copper construction is flexible and easy to route through conduits and around corners.\u003c\/li\u003e\n\u003cli\u003ePlenum-rated CMP and 300V CL3 rating provide an extra safety margin for air-handling spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report the jacket and conductor bundle feels thin compared with heavier power cable, so it may not suit high-stress mechanical environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor\u003c\/td\u003e\n\u003ctd\u003e18 AWG stranded bare copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductors\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShielding\u003c\/td\u003e\n\u003ctd\u003eAluminum foil shield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e100 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e300V (CL3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFire Rating\u003c\/td\u003e\n\u003ctd\u003eCMP \/ CL3P \/ FT6 (Plenum rated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 18\/3 Low Voltage Security Sound Alarm Cable is a solid, cost-effective option for professionals and serious DIY installers who need a plenum-rated, shielded cable for low-voltage systems. Its stranded copper conductors and foil shielding deliver reliable signal integrity, and the CMP rating makes it appropriate for ceiling and air-handling spaces, offering strong value for typical security, alarm and communication installs.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this cable safe for plenum installation?\u003c\/strong\u003e\u003cbr\u003eYes, it carries a CMP\/CL3P\/FT6 plenum rating suitable for use in air-handling spaces and ceilings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the shielding help with interference?\u003c\/strong\u003e\u003cbr\u003eThe aluminum foil shield reduces electromagnetic interference and helps maintain clear signal transmission for sensitive low-voltage circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this cable handle power-limited devices like thermostats and security panels?\u003c\/strong\u003e\u003cbr\u003eYes, it is rated 300V and CL3 for power-limited applications such as thermostats, security systems and audio\/visual equipment.\u003c\/p\u003e","brand":"Syston Cable Technology","offers":[{"title":"Default Title","offer_id":48621891616987,"sku":"B0C7HLKLK4","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/616nn7zQrdL._SL1500_c7ea1640-f204-4396-9173-254ec6580d87.jpg?v=1778443938","url":"https:\/\/gearmusthave.com\/products\/18-3-low-voltage-security-sound-alarm-cable-100-ft-plenum-rated","provider":"GearMustHave","version":"1.0","type":"link"}