DAHUA - ARA24-W2(868) - wireless key fob
• 4 buttons: Away arm, Stay arm, Disarm, SOS• Remote configuration, cloud upgrade and check status(via mobile App)• Built-in battery for up to 5 years, and supports low battery alarm •Frequency hopping, two-way communication and AES128 encryption algorithm ensure the communication's stability and security, reaching up to 1,300m in an open space.