The Allen-Bradley 1788-CNCHKR NetChecker is a handheld ControlNet network diagnostic tool used to test active ControlNet networks. This pocket-sized device provides on-site analysis of network health, with a power switch, selectable measuring method, and a node/address setting to target a specific part of the network. A key capability is verifying that the network signal is clean at the test point, helping technicians identify wiring or connectivity issues and confirm proper network operation after maintenance.
