Link2Home Smart Alarm External Siren (L2H-SECURESIREN) Enhance your home security with the Link2Home Smart Alarm External Siren. This powerful siren boasts adjustable brightness, volume (up to a deafening 105dB!), and duration, ensuring it's heard in any emergency. With a wide 80m open field Zigbee 3.0 transmission range, it provides reliable communication with your Link2Home smart alarm hub (L2H-SECUREGWAY, sold separately). Mains powered for continuous operation (5V 1A adapter included), it also features a built-in battery backup for up to 5 days of protection in a power outage. Features Adjustable brightness, volume (max 105dB), and duration 80m open field Zigbee 3.0 transmission range Requires a Link2Home smart alarm hub (L2H-SECUREGWAY) Mains powered (5V 1A adapter included) with battery backup (up to 5 days) Surface mount installation IP44 weather protection Specifications MPN: L2H-SECURESIREN EAN: 4004282480396 Transmission Range: 80m Battery Backup: Up to 5 days Fixing: Surface Mount Protection Rating: IP44