433MHz GSM Wireless Smart Home Alarm System — TUYA DIY Burglar Alarm with High-Volume Siren

Sleek, streamlined round housing with a polished finish and minimalist fashion design. Operates on 433MHz and supports GSM/TUYA smart home integration. Produces a powerful 100dB alarm and uses 8 LED alarm lights to deliver simultaneous sound and light alerts that effectively deter thieves. Built-in rechargeable battery provides standby operation for about 5 to 8 hours after a power failure. The siren can act as the alarm host and is able to learn up to 5 remote controllers and 20 detectors.