This smart siren supports wireless 2.4GHz network and 433MHz (1527 learning code) communication. When an alarm is triggered, the siren emits a high-decibel sound and flashing light, while sending real-time alerts to the user for prompt emergency response. Built on the TUYA smart home platform, it is compatible with most TUYA-based smart devices. It can act as an alarm hub, receiving RF signals from other 433MHz 1527 learning code devices and pushing notifications to your smartphone. Multiple systems can be linked to work together. When one siren is activated, all connected sirens will sound and send mobile notifications. The siren produces a 100dB alarm with bright flashing lights, designed to alert nearby individuals and deter intruders. It features a built-in rechargeable battery that provides 2 to 5 hours of continuous operation during power outages. Key Features: 1. Gateway & Siren 2-in-1 Wi-Fi alarm system, 100dB output 2. Built-in lithium battery for backup operation during power failure 3. Compatible with smart sockets and cameras 4. Remote arm, disarm, and notification functions 5. Multiple modes: Arm, Disarm, and Home Arm 6. Supports up to 24 accessories and 8 remote controls 7. Wireless transmission range up to 100 meters 8. Works with a wide range of TUYA smart products 9. Tamper, power-off, and power-on alerts 10. Adjustable volume and option to turn flash light on/off 11. Customizable accessory naming 12. Systems can be interconnected for synchronized alarms 13. Scheduled arm/disarm functionality 14. Connectable to cameras with motion detection, photo, and video recording 15. Compatible with Alexa, Google Assistant, and Tmall Genie Plug Type: EU Plug (suitable for Indonesia, Germany, France, Italy, etc.) Voltage: AC 220V Color: Red Material: Plastic Package Contents: 1 x Tuya Smart Siren Note: The package includes only the items listed above. Light reflection and display differences may cause slight color variations between the image and the actual product. Measurement tolerance: +/- 1-3 cm.