Mitsubishi Electric Pneumatic Timer UN-TR4AF OFF DELAY SRTD-NF DC110V 8 units *Production discontinued In older buildings, this is a component that handles sequence control on the benchboard of high-voltage receiving equipment. When a power outage occurs, the sequence control does not function, and the emergency generator does not operate. Also, there have been situations where it doesn't operate during the restoration of power after the annual inspection, and the building owner is demanded a large amount of compensation from tenants. Replacing this component regularly is very reassuring! Since production has ended, it is a truly necessary part for buildings that do not have plans for renewal, etc.! #HighVoltageReceivingEquipment #HighVoltagePowerReceivingAndTransformingEquipment #HighVoltageElectricalEquipment #BuildingManagement #BuildingMaintenance #CentralMonitoringRoom #ElectricalRoom #ChiefElectricalEngineer #Denken (Electrical Engineer Exam) #Electrician