Nippon Hakuyo Electronics NHE-Oki FS-4010 Manual Call Point The Nippon Hakuyo Electronics NHE-Oki FS-4010 is a conventional manual call point, protection rating IP42. FS-4010 manual call point gives an alarm by pressing the plexiglass. FS-4010 rated voltage/current DC28V / 100m and operation voltage range: DC20-30v.