Murphy TTD-H Configurable Fault Annunciator with PSU-2-T Power Supply

The Murphy TTD-H is a versatile, configurable fault annunciator designed for monitoring and annunciating faults in industrial engines, generators, compressors, and other equipment. Manufactured by FW Murphy (now part of Enovation Controls), this unit provides real-time fault detection for up to 48 sensor inputs, including Class A, B, and C types, with features like LCD display for hours and tachometer readings, programmable timers, and relay outputs for shutdown or alarm actions. It is ideal for applications in oil and gas, marine, power generation, and heavy machinery where reliable fault monitoring prevents downtime and equipment damage. Key advantages include easy configuration via front panel buttons, rugged construction for harsh environments, and compatibility with various sensors. Compared to similar products like those from Altronic or basic PLCs, the TTD-H offers superior plug-and-play setup, intrinsic safety options, and cost-effective fault isolation. Drawbacks may include limited modern connectivity (e.g., no native Ethernet) and the need for separate power supplies like the included PSU-2-T. This preowned unit shows signs of use but remains functional, with the PSU-2-T providing stable 19-30VDC input conversion to 5VDC output for reliable operation.