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On your website, it says that the OG-AR will not function properly with entry-level systems.   I am using a Lenz LZV100 Command Station with a 15V/3A power supply as I have a relatively small N-Scale layout.  Will the OG-AR be suitable?   Fred D.

OnGuard-AR

Hi Fred, Yes. The OG-AR is set at about 4 amperes. The NCE Power Cab and the Digitrax Zephyr cannot provide enough current to trip it. The Lenz should have enough  current to trip it. The 4 amperes is instantaneous, not continuous, so your 3 amp supply should be OK (the OG-AR will trip on energy stored in the LZV100.