Sonoff Zigbee Bridge Pro is the updated Zigbee bridge with newly added features that enables you to manage up to 128 sub-devices, furthermore enable smart home security with easy arm and disarm as well as manage scenes locally.Additionally plug-in devices can act as Zigbee routers to extend the “Zigbee” network range.You can customize 3 modes by setting different arming devices. The local smart scene always works well even when Wi-Fi is disconnected.Built-in high-precision local RTC, thus a short power outage will not affect the time synchronization. Time schedule can return work once power restoration.In addition please note that the local scene is for Zigbee devices only.FeaturesSupports adding up to 128 sub-devices- Zigbee Bridge Pro supports adding sub-devices increased from 32 to 128.Smart Home Security- Set up home security modes, such as home mode, away mode, and sleep mode. The bridge can be used as a local alarm.Local Smart Scene- Timing and scene linkage between Zigbee devices can be executed normally even if the network is disconnected.Wi-Fi & Zigbee Dual-protocol Support- Make communication between Zigbee devices and WiFi devices.Strong Connectivity, Limitless Possibility- The Bridge supports to add ZigBee devices that Sonoff has released, making your home smarter. SpecificationsModel: ZB Bridge-PInput: 5v 1AWireless connections: Wi-Fi IEEE 802.11 b/g/n 2.4GHZ, Zigbee 3.0Working environment: -10ºC-40ºCMaterial: PC V0Weight: 35gDimension: 62x62x20mm What’s in the box?1 x Sonoff Bridge Pro (Zigbee)