This is a simple uninterruptible power source (UPS) daemon which supports BKPro(TM) and BK UPS(TM) series by APC, and FREQUPS F series by Mitsubishi Electric Corp. Bkpupsd works as UPS monitor, sensing line-failures, shutting down the system cleanly, and finally shutting down the UPS itself. This UPSd provides only the "dumb mode", and the advanced features are not supported. Original was written by Yoshifumi Watanabe . Heavily re-written by Takahiro Kambe .