Key Features . Suitable for use with Cave Smart Home AlarmCan be installed with DC12V power adaptor (not included)Battery power requires 3 x D batteries (not included)36 months standby battery lifeWeatherproof to IP54 rating528 MHz frequency prevents wireless interferenceLED strobe light to deter intrudersCave Smart Wireless Outdoor Siren The Cave Wireless Siren is designed for use with the Cave Smart Home system. The siren is easily added to your existing Cave system using the Cave App. Simple to mount to the exterior of your home/business the siren features tamper protection and a powerful 115dB volume. Total peace of mind. Power Options The outdoors wireless siren can be installed with either a DC12V power adapter or with just 3 x D batteries. Battery life on standby is up to 36 months. Tamper Proof Mounting The Cave wireless siren is tamper proofed against a would be intruder by a tamper proof release button a bubble level and a powerful 115dB volume. Easy Integration The cave wireless siren is designed for use with the cave smart home system. Integrate the Cave Siren into your Cave system using the secure QR code What\'s in the Box . x1 Cave Wireless Outdoor Siren5pcs Screws5pcs Plastic Screw boltsDecal IncludedMulti-lingual User Manual. .