PAR-215 SR250-868MhZ-P9S PARADOX WIRELESS OUTDOOR SIREN WITH BUILT-IN STROBE ...Outdoor siren via Paradox radio. 868 MHz with bidirectional communication and continuous supervision. 100 dB with integrated strobe light. Double action tamper. 4.5 Vdc power supply by 3 D batteries or external source. IP54 protection. Up to 3 years of autonomyPARADOX WIRELESS OUTDOOR SIREN WITH BU...Outdoor siren via Paradox radio. 868 MHz with bidirectional communication and continuous supervision. 100 dB with integrated strobe light. Double action tamper. 4.5 Vdc power supply by 3 D batteries or external source. IP54 protectionView price