Interior siren analogical route I remove with optical indicator. Equipped with transmitter / recipient route I remove. Equipped with double source for batteries of lithium that guarantee the functioning of the siren for 5 years being this one, totally supervised. He has acoustic exit of up to 90dB and 32 eligible tones. He has sign of breakdown of tamper, to prepare the equipment of not wished extractions or of physical hurts. Designed and made with regard to procedure EN54-3, EN54-25 and EN300-220. Protection degree IP54. Frequency of work of 868MHz. Siren of red color with optical indicator of color amber.