"A manual control switch having an actuator intended to be operated by force exerted by a part of the human body, usually the finger or palm of the hand, and having stored energy (spring) return." . "RDS473894" . "2360000" . "1999.07.08" . "PUSH-BUTTON" . "u82234" . "Qualified" . . "IEC 50-441-14-53" . "PUSH-BUTTON" .