* The IS-RCU homeruns to the IS-CCU to add thirty room stations to the system. 
* Up to four IS-RCU's may be connected to the IS-CCU using two CAT-5e/6 cables.  
* The unit can be rack mounted in an EIA standard rack (2U required) or wall mount using brackets. 
* It is powered using an external 48V DC power supply, IS-PU-UL.