It seems like your Omniguard 4 pressure recorder is not powering on or responding to any commands. This may indicate a possible electrical issue or internal malfunction. The estimated replacement cost for the Omniguard 4 is typically high due to its advanced features, so it's important to have it inspected and repaired by a professional technician

I have an OmniGuard 540 UV/IR Test Source unit that is malfunctioning. The unit is not emitting any UV or IR light when powered on, and none of the control buttons respond. Despite attempting to troubleshoot the issue by resetting the unit and checking all connections, the problem persists. Based on my evaluation, I suspect there may be an internal circuitry issue that is preventing the light sources from functioning properly. To have the OmniGuard 540 repaired, the estimated replacement cost could range from $200 to $400, depending on the extent of the repairs needed and the availability of replacement parts. I am interested in obtaining repair service for the unit as soon as possible to ensure its optimal functionality within my business operations.