MiLight

Internet-connected RGB/white lightbulbs. milight.com. Proprietary 2.4GHz protocol. Also sold as: limitlessled.com

Wi-Fi bridge

Uses a Wi-Fi controller/bridge to connect to the internet and translate commands to proprietary 2.4GHz protocol.

• default SSID: "milight" Product manual
• openHAB binding to Milight

There appears to be at least 4 different version of the Wi-Fi controller. Version 4 supports 802.11n, previous versions support only 802.11bg.

Teardown / packet sniffing of a controller: [1]

• uses "HF-A11-SMT" Wi-Fi module by Hi-Flying [2], firmware appears to be linux-based (Ralink chipset?)

Lightbulb

teardown of RGB lightbulb

• BL24C02
• LT8900 - 2.4 GHz wireless transceiver. product page and datasheet (there is also a chinese "LT8900 Application manual" floating around the internet)