Enter NEW5 at Checkout for 5% OFF & Free Shipping Australia Wide

{"id":7042927820951,"title":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST","handle":"first-alert-hardwired-wireless-smoke-alarm-with-photoelectric-sensor-and-battery-backup-sa521cn-3st","description":"\u003ch3\u003eFIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eFor those who want a comprehensive detection system\nwithout hiring an electrician or worrying about hardwiring, the FIRST ALERT\nSA521CN Wireless Interconnected Hardwired Photoelectric Smoke Alarm is an\nideal solution. Use this smoke detector to replace an existing hardwired smoke\nalarm and then install additional compatible FIRST ALERT Wireless alarms for\nan interconnected safety network (additional alarms sold separately). Wireless\ntechnology makes it possible for the detector to connect with up to 18\ncompatible FIRST ALERT wireless-enabled alarms to create a wireless safety\nnetwork. These connected alarms can communicate with each other and sound in\nunison. The photoelectric smoke sensor is designed to reduce false alarms from\ncooking smoke or shower steam while remaining sensitive to real danger. The\nsmoke detector has an integrated battery backup in case of power outages and\nfeatures a single button to silence false alarms and test the unit.Eco-\nfriendly, completely recyclable as an electronic device. \"The FIRST ALERT\nSA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm links\nthe alarms throughout your home. This 120VAC hardwired wireless detector with\nbattery backup integrates single alarms into a system. By adding Wireless\nInterconnect battery powered alarms elsewhere, when one alarm sounds, all\nalarms will be notified. Easily link alarms with the press of a button. The RF\nInterconnect technology continues to provide a reliable and secure radio\nfrequency communication between Wireless Interconnect alarms. This technology\nfeatures 915 MHz frequency with 65,000 security codes, and three (3) channel\nfrequency hopping. The unit is compatible with an assortment of FIRST ALERT\nwireless alarms, which includes the SA501CN-3ST (SA501B), SA501CN2-3ST\n(SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B. SCO501CN-3ST\n(SCO500B), SCO501CN2-3ST. Photoelectric smoke sensor reduces nuisance alarms.\nEasy access battery drawer: no need to remove an alarm from the ceiling to\nchange battery. Includes 10-year limited warranty. Meets UL standards. Note:\nThis product is intended for non-professional do it yourself installation. If\nyou would like information about a professionally installed and monitored\nsystem, please contact FIRST ALERT Professional at . FIRST ALERT\nProfessional is not affiliated with BRK Brands, Inc. \"The First\nAlert SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm\nlinks the alarms throughout your home. This 120VAC hardwired wireless detector\nwith battery backup integrates single alarms into a system. By adding Wireless\nInterconnect battery powered alarms elsewhere, when one alarm sounds, all\nalarms will be notified. Easily link alarms with the press of a button. The RF\nInterconnect technology continues to provide a reliable and secure radio\nfrequency communication between Wireless Interconnect alarms. This technology\nfeatures 915 MHz frequency with 65,000 security codes, and three (3) channel\nfrequency hopping. The unit is compatible with an assortment of First Alert\nwireless alarms, which includes the SA501CN-3ST (SA501B), SA501CN2-3ST\n(SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B. SCO501CN-3ST\n(SCO500B), SCO501CN2-3ST. Photoelectric smoke sensor reduces nuisance alarms.\nEasy access battery drawer: no need to remove an alarm from the ceiling to\nchange battery. Includes 10-year limited warranty. Meets UL standards. Note:\nThis product is intended for non-professional do it yourself installation. If\nyou would like information about a professionally installed and monitored\nsystem, please contact First Alert Professional at . First Alert\nProfessional is not affiliated with BRK Brands, Inc. \"\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eHelp keep your family safe with this hardwired smoke alarm that wirelessly interconnects with other First Alertenabled alarms to create a home safety network\u003c\/li\u003e\n \u003cli\u003eEquipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms\u003c\/li\u003e\n \u003cli\u003eWirelessly connect up to 18 First Alert enabled alarms for the maximum in whole-home protection\u003c\/li\u003e\n \u003cli\u003eHardwired alarm includes 2 AA backup batteries for continued monitoring in the event of a power outage\u003c\/li\u003e\n \u003cli\u003eIncludes test\/silence button, low-battery warning, EZ access battery door\u003c\/li\u003e\n \u003cli\u003eFirst Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2021-07-25T15:05:45+10:00","created_at":"2021-07-25T15:05:45+10:00","vendor":"FIRST ALERT","type":"Smoke Detectors \u0026 Fire Alarms","tags":["nn08"],"price":20600,"price_min":20600,"price_max":20600,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":40590885945495,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B000EVO9D4","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST","public_title":null,"options":["Default Title"],"price":20600,"weight":386,"compare_at_price":null,"inventory_management":null,"barcode":"111012350004","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/newnestshop.com\/cdn\/shop\/products\/B000EVO9D4.jpg?v=1651822263","\/\/newnestshop.com\/cdn\/shop\/products\/71c-Nuno3bL_a32cb5b7-1ae0-47a4-bb96-c2b32d4e8029.jpg?v=1627676112","\/\/newnestshop.com\/cdn\/shop\/products\/61s6qBl_URL.jpg?v=1627676112","\/\/newnestshop.com\/cdn\/shop\/products\/71Ot79xzeVL_0023ece7-faad-4f37-b618-1d46c4a2d10d.jpg?v=1627676113","\/\/newnestshop.com\/cdn\/shop\/products\/614259XsqrL.jpg?v=1627676113","\/\/newnestshop.com\/cdn\/shop\/products\/51e1sYRVtTL.jpg?v=1627676113","\/\/newnestshop.com\/cdn\/shop\/products\/61_NGOC1HQL.jpg?v=1627676113"],"featured_image":"\/\/newnestshop.com\/cdn\/shop\/products\/B000EVO9D4.jpg?v=1651822263","options":["Title"],"media":[{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":27870597316759,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/B000EVO9D4.jpg?v=1651822263"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/B000EVO9D4.jpg?v=1651822263","width":1200},{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":23801807929495,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/71c-Nuno3bL_a32cb5b7-1ae0-47a4-bb96-c2b32d4e8029.jpg?v=1627676112"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/71c-Nuno3bL_a32cb5b7-1ae0-47a4-bb96-c2b32d4e8029.jpg?v=1627676112","width":1200},{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":23801807962263,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/61s6qBl_URL.jpg?v=1627676112"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/61s6qBl_URL.jpg?v=1627676112","width":1200},{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":23801807995031,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/71Ot79xzeVL_0023ece7-faad-4f37-b618-1d46c4a2d10d.jpg?v=1627676113"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/71Ot79xzeVL_0023ece7-faad-4f37-b618-1d46c4a2d10d.jpg?v=1627676113","width":1200},{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":23801808027799,"position":5,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/614259XsqrL.jpg?v=1627676113"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/614259XsqrL.jpg?v=1627676113","width":1200},{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":23801808060567,"position":6,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/51e1sYRVtTL.jpg?v=1627676113"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/51e1sYRVtTL.jpg?v=1627676113","width":1200},{"alt":"FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST - NewNest Australia","id":23801808093335,"position":7,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/newnestshop.com\/cdn\/shop\/products\/61_NGOC1HQL.jpg?v=1627676113"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/products\/61_NGOC1HQL.jpg?v=1627676113","width":1200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eFIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eFor those who want a comprehensive detection system\nwithout hiring an electrician or worrying about hardwiring, the FIRST ALERT\nSA521CN Wireless Interconnected Hardwired Photoelectric Smoke Alarm is an\nideal solution. Use this smoke detector to replace an existing hardwired smoke\nalarm and then install additional compatible FIRST ALERT Wireless alarms for\nan interconnected safety network (additional alarms sold separately). Wireless\ntechnology makes it possible for the detector to connect with up to 18\ncompatible FIRST ALERT wireless-enabled alarms to create a wireless safety\nnetwork. These connected alarms can communicate with each other and sound in\nunison. The photoelectric smoke sensor is designed to reduce false alarms from\ncooking smoke or shower steam while remaining sensitive to real danger. The\nsmoke detector has an integrated battery backup in case of power outages and\nfeatures a single button to silence false alarms and test the unit.Eco-\nfriendly, completely recyclable as an electronic device. \"The FIRST ALERT\nSA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm links\nthe alarms throughout your home. This 120VAC hardwired wireless detector with\nbattery backup integrates single alarms into a system. By adding Wireless\nInterconnect battery powered alarms elsewhere, when one alarm sounds, all\nalarms will be notified. Easily link alarms with the press of a button. The RF\nInterconnect technology continues to provide a reliable and secure radio\nfrequency communication between Wireless Interconnect alarms. This technology\nfeatures 915 MHz frequency with 65,000 security codes, and three (3) channel\nfrequency hopping. The unit is compatible with an assortment of FIRST ALERT\nwireless alarms, which includes the SA501CN-3ST (SA501B), SA501CN2-3ST\n(SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B. SCO501CN-3ST\n(SCO500B), SCO501CN2-3ST. Photoelectric smoke sensor reduces nuisance alarms.\nEasy access battery drawer: no need to remove an alarm from the ceiling to\nchange battery. Includes 10-year limited warranty. Meets UL standards. Note:\nThis product is intended for non-professional do it yourself installation. If\nyou would like information about a professionally installed and monitored\nsystem, please contact FIRST ALERT Professional at . FIRST ALERT\nProfessional is not affiliated with BRK Brands, Inc. \"The First\nAlert SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm\nlinks the alarms throughout your home. This 120VAC hardwired wireless detector\nwith battery backup integrates single alarms into a system. By adding Wireless\nInterconnect battery powered alarms elsewhere, when one alarm sounds, all\nalarms will be notified. Easily link alarms with the press of a button. The RF\nInterconnect technology continues to provide a reliable and secure radio\nfrequency communication between Wireless Interconnect alarms. This technology\nfeatures 915 MHz frequency with 65,000 security codes, and three (3) channel\nfrequency hopping. The unit is compatible with an assortment of First Alert\nwireless alarms, which includes the SA501CN-3ST (SA501B), SA501CN2-3ST\n(SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B. SCO501CN-3ST\n(SCO500B), SCO501CN2-3ST. Photoelectric smoke sensor reduces nuisance alarms.\nEasy access battery drawer: no need to remove an alarm from the ceiling to\nchange battery. Includes 10-year limited warranty. Meets UL standards. Note:\nThis product is intended for non-professional do it yourself installation. If\nyou would like information about a professionally installed and monitored\nsystem, please contact First Alert Professional at . First Alert\nProfessional is not affiliated with BRK Brands, Inc. \"\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eHelp keep your family safe with this hardwired smoke alarm that wirelessly interconnects with other First Alertenabled alarms to create a home safety network\u003c\/li\u003e\n \u003cli\u003eEquipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms\u003c\/li\u003e\n \u003cli\u003eWirelessly connect up to 18 First Alert enabled alarms for the maximum in whole-home protection\u003c\/li\u003e\n \u003cli\u003eHardwired alarm includes 2 AA backup batteries for continued monitoring in the event of a power outage\u003c\/li\u003e\n \u003cli\u003eIncludes test\/silence button, low-battery warning, EZ access battery door\u003c\/li\u003e\n \u003cli\u003eFirst Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)\u003c\/li\u003e\n \u003c\/ul\u003e"}

FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST

In Stock. Leaves warehouse within 2 - 3 business days

$206.00 AUD
Maximum quantity available reached.
Free Shipping Australia Wide
100% Safe & Secure Checkout
100 Days Return Policy *
1 Year Warranty *

FIRST ALERT Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST

For those who want a comprehensive detection system without hiring an electrician or worrying about hardwiring, the FIRST ALERT SA521CN Wireless Interconnected Hardwired Photoelectric Smoke Alarm is an ideal solution. Use this smoke detector to replace an existing hardwired smoke alarm and then install additional compatible FIRST ALERT Wireless alarms for an interconnected safety network (additional alarms sold separately). Wireless technology makes it possible for the detector to connect with up to 18 compatible FIRST ALERT wireless-enabled alarms to create a wireless safety network. These connected alarms can communicate with each other and sound in unison. The photoelectric smoke sensor is designed to reduce false alarms from cooking smoke or shower steam while remaining sensitive to real danger. The smoke detector has an integrated battery backup in case of power outages and features a single button to silence false alarms and test the unit.Eco- friendly, completely recyclable as an electronic device. "The FIRST ALERT SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm links the alarms throughout your home. This 120VAC hardwired wireless detector with battery backup integrates single alarms into a system. By adding Wireless Interconnect battery powered alarms elsewhere, when one alarm sounds, all alarms will be notified. Easily link alarms with the press of a button. The RF Interconnect technology continues to provide a reliable and secure radio frequency communication between Wireless Interconnect alarms. This technology features 915 MHz frequency with 65,000 security codes, and three (3) channel frequency hopping. The unit is compatible with an assortment of FIRST ALERT wireless alarms, which includes the SA501CN-3ST (SA501B), SA501CN2-3ST (SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B. SCO501CN-3ST (SCO500B), SCO501CN2-3ST. Photoelectric smoke sensor reduces nuisance alarms. Easy access battery drawer: no need to remove an alarm from the ceiling to change battery. Includes 10-year limited warranty. Meets UL standards. Note: This product is intended for non-professional do it yourself installation. If you would like information about a professionally installed and monitored system, please contact FIRST ALERT Professional at . FIRST ALERT Professional is not affiliated with BRK Brands, Inc. "The First Alert SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm links the alarms throughout your home. This 120VAC hardwired wireless detector with battery backup integrates single alarms into a system. By adding Wireless Interconnect battery powered alarms elsewhere, when one alarm sounds, all alarms will be notified. Easily link alarms with the press of a button. The RF Interconnect technology continues to provide a reliable and secure radio frequency communication between Wireless Interconnect alarms. This technology features 915 MHz frequency with 65,000 security codes, and three (3) channel frequency hopping. The unit is compatible with an assortment of First Alert wireless alarms, which includes the SA501CN-3ST (SA501B), SA501CN2-3ST (SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B. SCO501CN-3ST (SCO500B), SCO501CN2-3ST. Photoelectric smoke sensor reduces nuisance alarms. Easy access battery drawer: no need to remove an alarm from the ceiling to change battery. Includes 10-year limited warranty. Meets UL standards. Note: This product is intended for non-professional do it yourself installation. If you would like information about a professionally installed and monitored system, please contact First Alert Professional at . First Alert Professional is not affiliated with BRK Brands, Inc. "

Product Features

  • Help keep your family safe with this hardwired smoke alarm that wirelessly interconnects with other First Alertenabled alarms to create a home safety network
  • Equipped with photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the number of false alarms
  • Wirelessly connect up to 18 First Alert enabled alarms for the maximum in whole-home protection
  • Hardwired alarm includes 2 AA backup batteries for continued monitoring in the event of a power outage
  • Includes test/silence button, low-battery warning, EZ access battery door
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

Buy with confidence as this product comes with 18 months full local warranty in Australia & New Zealand (unless otherwise stated in the overview).

This product also comes with the benefits of the CocoonPower Warranty. For further details please read our Warranty Guidelines.

You can also purchase 3 Year Extended Care. If you are interested please see our Extended Care Information.

Related Products