868 MHz two-way wireless communication Configurable alarm sound for power on / off and LED indicator 3 year battery life (activates every two weeks and alerts 90 seconds before each activation) AES-128 encryption Tamper resistant front and back panel 3 types of alarm sounds: fire alarm, panic alarm and burglar alarm Buzzer Decibel: 90 to 110 dB Fully configurable remotely via app Multiple login methods and easy installation design Frequency hopping against interference for reliable transmission