Inferno Intenso is a sound barrier that can be used outdoors, under eaves or similar. Inferno Intenso is a unique sound barrier that generates an unbearable sound during alarms, which affects the entire body even when protective equipment is used. A single Inferno Intenso can cover an area of up to 70 square meters indoors and several units can be connected together to cover significantly larger areas. This product is adapted to sit protected outdoors, for example under an eaves in some protection against weather and wind and should be aimed at the area it is intended to protect, but for natural reasons, the coverage area that the product is effective depends on where and how the product is installed. The product can of course also be used as a traditional siren. Battery 9.6V 1600 mAh is included and should be replaced at least every three years. In colder conditions, the battery may need to be replaced more often, but in that case is indicated by the product. Power consumption: 12-16 V DC, Standby time without charging: 30 days. Operating time at constant signal: > 30 minutes. Frequency: 2-5k Hz. Sound pressure: 125 -127 ±1 dB(A) @ 1m.