Note : Your Quotation Request will be directed to Silicon Labs.
The EM3581 from Silicon Labs is a RF Module with Frequency 2.4 GHz, Supply Voltage 2.1 to 3.6 V, Output Power -55 to 8 dBm, Sensitivity -102 to -94 dBm, Data Rate Up to 5 Mbps. More details for EM3581 can be seen below.
Compact and Powerful Bluetooth Smart SoC
You can now find similar products from multiple companies on everything RF.