Aeotec Siren 6, Z-Wave Plus S2 Compatible Zwave Siren Safety Speaker,, 110 Db. Siren 6 is your home?s smart indoor siren. Built with Z-Wave Plus S2 to be a smart home security siren, it features a 110dB speaker coupled with 1,000 lumens visual light alert strobe. Can be used as siren for security alarm, smoke sensor, and CO sensors via Z-Wave Pre-loaded 6 security sounds, 8 safety sounds, and 30 tones in total. Each tone is volume adjustable between 80dB and 110dB hour backup battery lets Siren 6 work even when power is turned off Can also be used as doorbell by pairing with Aeotec Button. Can use up to 3 Buttons, each sold separately Compatible with certified Z-Wave gateways including: Samsung SmartThings, HomeSeer, Open Z-Wave, Zipabox and more(Not compatible with Vera). Z-Wave Plus and Z-Wave S2 certified for quicker response time, better wireless range up to 490 feet in open space, and additional wireless security encryption. Z-Wave Plus certification number: ZC10-19046417.