for Siemens Boltshield FSPD140 40000Amp 120/240V Type 2 Surge Protection Device
(2) The FSPD140 surge protector has an audible alarm and LED indicator notification (audible alarm, protection status LED, red service LED). FSPD140 Surge Protective Device. It is typically installed in distribution boxes, with the main feature of handling currents with an 8/20μs waveform.