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roller door switch
Roller door switch/Key Switch
This products are mainly used in the roller door. Which can control the roller door open or close automatically by the electricity.
For more details pls see the following:
Zinc alloy compression casting box
Brass cam lock, brass key(Or zinc alloy cam lock) .
Internal structure :
2 microswitch buil-in, Can set up automatic on-off after power on.
Keys can move three positions with spring.
Keys only can withdrawn from one position, and can avoid key loss.