When is riser rated cabled required for residential? At my last house I ran a few additional security runs with Honeywell 1103 cable that was CM/CL2 rated. At my new house I'm running all new security and smoke detector wiring and am debating if I need CMR/CL2R or if CM/CL2 is sufficient. I'm having a harder time finding Honeywell 2103 cable online to order. Interesting Jmac.com shows discontinued for the 21031101 part number.