Brand: X-Sense Features: Please Note: XS01-WR supports wireless interconnection but does not have Wi-Fi; if you need Wi-Fi, please search for XS01-WX Link Up Your Alarms: Link together up to 24 X-Sense wireless alarms so if one sounds, all will; quick awareness of the emergency ...Brand: X-Sense Features: Please Note: XS01-WR supports wireless interconnection but does not have Wi-Fi; if you need Wi-Fi, please search for XS01-WX Link Up Your Alarms: Link together up to 24 X-Sense wireless alarms so if one sounds, all will; quick awareness of the emergency allows you to act faster to protect your home and family; particularly suitable for larger homes or hard of hearing occupants Accurate with Fewer False Alarms: Reliable alarm keeps you and your loved ones protected from smoke and fire; quickly detects smoke from smoldering fires thanks to advanced photoelectric sensors; low false alarm rate with air sampled 3 times every 10 seconds Remote Control Compatible (Not Included): Use a remote control to test or mute the device without climbing to reach the test/silence button; accessibility feature makes this alarm an ideal choice for those with reduced mobility 10-Year Product Life and Replaceable Battery: The alarm’s photoelectric sensor has a lifespan of up to 10 years; operates on a replaceable CR123A battery with an average lifespan of up to 5 years Fits Right In: Mini size alarm measuring just 3.1 × 1.9 in (78 × 48 mm) and with hidden mounting bracket; low-profile design makes it an unobtrusive addition to any home décor Binding: Tools & Home Improvement model number: XS01-WR EAN: 0761989291406 Package Dimensions: 3.2 x 3.1 x 2.4 inches