RX6000 Crystal Receiver
RX6000 Radio Modules are credit card sized, crystal controlled, Receivers. They have a sensitivity of better than -112dBm with low power consumption.

TX6000 Crystal, Half Watt Transmitter
The TX6000 Radio Module is a credit card sized, crystal controlled, half watt Transmitter. It has a fast attract time and low power consumption. The radio module RF power can be adjusted from 5mW to 500mW with a frequency range of 400MHz to 475MHz.