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Head Size: 31 x 12 x 3mm / 1
LFR bearings are specially guide wheel and pulley wheel for 3D printer extrude
Air Pneumatic manifold is the starting points for air cylinder systems
security data signal transmission
Diameter: 73mm/2
10pcs HC-34A NC Recessed Wired Gate Contact Sensor Alarm Magnetic Reed Switch Wheel Handles Head Size: 31 x 12Description: 1. NC means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). When make order,pls check carefully! 2. These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. 3. Work as an anti theft alarm, perfect for metal door and window.
