SIRZB-110 - Intelligent Siren EU (Zigbee). The siren can emit loud sounds to scare away intruders, burglars or in-laws... In reality, however, it can scare away anyone you want. With a volume of 90 dBm, you can be sure that nobody will miss the alarm. This Zigbee siren comes with a battery backup, so it's always there to sound the alarm when needed - even in the event of a power cut.

As if that wasn't enough, the frient Smart Siren can also act as a Zigbee signal booster, amplifying wireless communication between your other Zigbee devices. For example, if some of your devices have a weak signal because they are installed behind a brick wall.