I've been swimming in the sea of 2.4GHz transceiver modules available (similar to an XBee), and it's been a bit daunting. I was hoping to get input on a suitable solution for a high volume design which will be used worldwide. The XBee is up to the task, but didn't seem the best option for a high volume design.
I'm working on a design that requires the use of wireless data communication, as well as having many nodes communicating to one main "hub" (up to 20). The transmitting distance will not be any greater than 100 feet (obstructed by interior wood frame walls). The specs I am seeking:
RF Standard: 802.15.4 (could change if needed)
Data Rate: 250 kbps is plenty, could go lower
Antenna type: PCB trace antenna preferred for a compact design
Interface: SPI, I2C, or UART
Supply Voltage: 3.3Vdc
Encryption: not required, but will be used if available at price point
I'd like a transceiver that is a drop in module that is FCC tested to mitigate any issues with RF certification of the final product / design. My goal is to find something that is around $8 dollars each in quantities of 1000.
Any help is appreciated.