HIKVISION Ax pro Sirena da Esterno Wireless DS-PS1-E-WE -

Wireless external sounder 868 MHz two-way wireless communication 3 years battery life span (triggered every two weeks and alerting 90 s for each triggering) AES-128 encryption Front and rear panel tamper-proof 3 kinds of alarm sounds: fire alarm, panic alarm, and intrusion alarm Buzzer Decibel: 110 dB Fully remote configurable through App Multiple enrollment methods and easy installation design Frequency hopping against jamming for reliable transmission IP65 protective level ...