Dahua ARD324-W2(868S) - Airshield Small Door Detector Plus

> Displays the temperature of the surrounding environment and supports the overheating alarm. 

> Frequency hopping and two-way communication technology ensure that communication is stable. 

> Supports cloud update and automatically restores when cloud update fails. 

> Supports jamming detection and communication encryption. 

> Supports tilt and shock detection, and generates alarms when the event happens.