WINK Relay Guide De L'utilisateur page 13

Bluetooth / Wi-Fi combo chip (Semco SWB B53 based on
Broadcom BCM4334) [MRD SW 002]
This chip provides Wi-Fi, Bluetooth, and BLE (Bluetooth Low
Energy) connectivity. Bluetooth connectivity allows a wider
spectrum of products to interact with the Wink platform
on Relay. It also lets Relay identify multiple users and create
custom experiences based on whose Bluetooth-equipped
smartphone is nearby.
ZigBee module (Silicon Images EM357 Ember) [MRD SW 003]
The use of ZigBee allows you to add support for existing
products, such as wireless light bulbs, as well as other smart/
connected home products in the future. The use of ZigBee
also acts as a passive extender for other ZigBee products
you may already own.
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