Interior siren analogical route I remove. 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, 32 eligible tones and system of supervision by means of internal microphone. 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. White color.