Controllers/Add-On Modules
Controllers are required to automatically re-transmit communications. All of the following controllers provide at least basic repeater capabilities. Additional features are described for each controller.

Basic Interface
Provides repeater functionality, remote knock-down/set-up, in/cross band and uni/bi-directional capabilities.

I20R Onsite Repeater 
Provides up to 10 PL/DPL single-code or cross-code combinations for multiple group repeater operations, remote knock-down/set-up, in/cross-band and uni/bi- directional capabilities and CWID (Morse code). The I20R also provides battery power alert tones and Radio Service Software programming.

ZR310 Multiple Tone Community Repeater 
Adds up to 50 PL and 20 DPL single-code or cross-code combinations and enhanced community repeater operator capabilities.

I50R Basic Interconnect  
Adds basic interconnect and remote knock-down and set-up.

ZR340 Advanced Interconnect 
Adds advanced interconnect features such as prestored telephone numbers, access/override access codes, dialing restrictions, call timers, direct-air access and CWID.

ZR320 Selective Calling Interconnect 
Provides revertive PL/DPL/Quik-Call group or individual selective calling, CWID and advanced interconnect capabilities.

I750R Selective Calling Interconnect 
Provides revertive PL/DPL/Quik Call II/MDC-1200 group or individual selective signaling and advanced interconnect capabilities such as prestored telephone numbers, access/override access codes, dialing restrictions, call timers, direct-air access and CWID.

SmarTrunk II
Requires RadiusPort radios to be equipped with SmarTrunk II Advantage Boards. Provides trunked repeater functionality, group calling, individual selective calling, advanced interconnect calling and airtime accumulation capabilities.

TRA100R Tone Remote Adapter 
Provides remote knock-down/set-up and tone remote capabilities for remote access and control of repeaters using the MC series tone-remote desksets.