Tuya WiFi 4G EU GSM Smart Security Alarm System 433MHz Timing Function
Two-way Intercom APP Remote Alarm Notification Di

WiFi - A term used for wireless networking

Digital - A system that uses only 0s and 1s to transmit data

Alarm - A device which emits a sound at a pre-set time/event

GSM - Global System for Mobile Communications is a standard in mobile communication

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