"Wireless Internal SounderThe wireless internal sounder, supporting 868 Mhz wireless communication, Tri-X wireless protocol, multiple enrollment methods, two-way wireless communication, multiple alarm sounds, and strobe light indication, is used for instant alarm alerting.
868 MHz two-way wireless communicationConfigurable arming/disarming prompt sound and LED indicator3 years battery life span (triggered every two weeks and alerting 90 s for each triggering)AES-128 encryptionFront and rear panel tamper-proof3 kinds of alarm sounds: fire alarm, panic alarm, and intrusion alarmBuzzer Decibel: 90 to 110 dBFully remote configurable through AppMultiple enrollment methods and easy installation designFrequency hopping against jamming for reliable transmission"