Honeywell E-Mon Class 1000 Quick Start Manual page 6

RJ-45 eight-conductor patch cables for Class 1000 and 2000 meter to IDR inputs 1 through 16
(500 foot maximum.)
NOTE: All cables are wired pin-to-pin (straight through) as shown above.
Example supplier of RJ-45 patch cables:
http://www.staples.com/Belkin-10-Cat6-RJ45-RJ45-Patch-Network-Cable-Black/product_IM1QZ4626
See the IDR installation manual for complete instructions.