This Door Magnetic Reed Switch is a compact, normally open sensor for door and cabinet monitoring. It delivers reliable position sensing with a small footprint and simple wiring. Key features - Compact dimensions 11 x 18 mm (D x H) and light weight 10 g for easy installation on doors or frames - White color with plastic and metal construction for durability and discreet mounting - Cable length 25 cm provides flexible mounting options in various layouts - Normally Open NO contact, suitable for alarm controllers, indicators, and basic monitoring circuits - Package includes 1 x Door Magnetic Reed Switch Specifications - Product name: Door Magnetic Reed Switch - Colour: White - Material: Plastic, Metal - Dimensions: 11 x 18 mm (D x H) - Cable length: 25 cm - Type: NO - Net weight: 10 g - Package contents: 1 x Door Magnetic Reed Switch Use scenarios - Home entry doors to monitor when a door is opened or closed - Cabinet, closet, or safe doors in offices or workshops for security or inventory control - Small interior office doors or mail slots where unobtrusive sensing is desired