DHI-ARD822-W2(868)-B

"• Buzzer Decibel≥105±3dB\1M • Three-level volume control, remote configuration, cloud upgrade and check status (via mobile App) • Built-in battery for up to 2.5 years, and supports low battery alarm • Temperature measurement"

"Two-way RF communication. Provides multiple LED colors to indicate different statuses. Cloud update and automatic recovery from update failure. Offers accidental press prevention. IP54 rated."

"Two-way RF communication. Provides multiple LED colors to indicate different statuses. Cloud update and automatic recovery from update failure. Offers accidental press prevention. IP54 rated."

"Supports 3 shortcut alarms: Medical, fire, and emergency. Arm/Disarm with password or IC card. Supports signal strength detection to select suitable installation sites. Low battery alarm. Temperature measurement."