Emerson ControlWave EFM 4710A Instruction Manual page 155

Radios are user installed onto the ECOM Module (see Figure C-4A) and their associated
Ports are setup during installation in the Ports Page of the Flash Configuration Utility. The
Flash Configuration Utility is accessed via NetView or LocalView.
FreeWave® Spread Spectrum Wireless Data Transceiver:
Operates in the 902 to 928 MHz range (20 miles).
Figure C-4A - ECOM Module Component Identification Diagram #1
CI-ControlWave EFM Appendix C - Hardware Installation Guide / C-7