“normally open”簡單造句，normally open造句子

Usually divided into normally open, normally closed and self-holding three.

These valves can be normally closed, normally open or universal.

Means need 25a contactor, main contact are three normally open, auxiliary contact is one normally open, control coil voltage is DC 110v, order volume is 20 sets.

The same set of system (double speed) is used for usual ventilation and smoke extraction in case of fire accident, so the air intake is set as normally open.

Both integrated PNP switch outputs are freely programmable, allowing the user to adjust the limit value, hysteresis, and functionality type (normally closed or normally open) as needed.