ITEM NAME:Smart Electronic Mini Magnetic Dry Reed Switch Sensor Module for Arduino Description: - Mini magnetic reed modules. - This module is ideally suited to adding a magnetic switch to your project. - Apply to switchboard, duplicator, washing machine, refrigerator, camera, electronic scale, gas meter and water meter, etc Specification: - Size: Approx. 26 x 15 x 16mm/0.98 x 0.6 x 0.62inch - Working distance: 1.5 M - Operating voltage: 3.3 V-5 V - Output Type: Digital switching output (0 and 1) Package Included: 1 Piece Reed Switch Module.Mini magnetic reed modules. 1 Piece Reed Switch Module. - This module is ideally suited to adding a magnetic switch to your project. - Output Type: Digital switching output (0 and 1).