W18 4G GSM Smart Home Alarm System with Motion Sensor — 110dB Built-in + 110db Wired Siren, 8hr Backup, Auto-Dial (Up to 6 Numbers)

When an intrusion is detected, the W18 alarm emits a powerful 110dB alert to warn neighbors and deter intruders. The unit includes a built-in siren and supports an additional 110db wired siren for enhanced audible protection. Designed as a high-end system with stable, reliable performance, it also features a motion sensor detector to protect valuable assets and improve home safety. If mains power is lost, an internal backup battery keeps the system running for up to 8 hours. In a security event the auto-dialer will call up to 6 designated phone numbers to ensure you and your contacts are notified promptly.