Issue
Does the pinout for the display cables match between the Power Monitor and circuit monitor

Product Line
CM3000
CM4000
PM800
PM600

Environment
Cabling Pinout

Resolution
This depends on the model number of the meters in question. The CM3000, CM4000, and PM800 all use the same display cable. The PM600, on the other hand, uses a different pinout and will not function properly with a CM3/CM4/PM8 display cable. Despite the different pinouts, both display cables utilize a 6 pin RJ-11 jack with 26 AWG wire. Both cables are RS-232, thus 50ft is the maximum length. If the displays or cables are interchanged, no damage will occur. The pinouts are shown below:

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