FTR-Birdie self-contained electrical test and fault-finding logger records and displays all on/off voltage changes at its 16 inputs. Applications include monitoring, logging and fault finding for control systems, HVAC systems and production machinery. The solid-state, isolated input channels are fused, and the input on/off status of each line is displayed on an LCD. Input voltages of 12 V to 240 Vac/dc can be monitored without needing to program, select or configure inputs.