which rf module to use?

Projects Networking, Protocols, and Devices
3

PaulS:
If you have different range, speed, and/or reliability requirements, the answer could (will) be different.

range: 10 meters (minimum)
speed: 80 bps (minimum)
reliability requirements:

  1. i cant afford to lose a single bit.
  2. i cant afford to get the bit sequence mangled.