The Honeywell Ademco 945T-WH Magnetic Contact Sensor 10 Pack in white are brand new, sealed units that offer reliable alarm functionality for home surveillance. These surface mount contact sensors are wired and feature adjustable magnets for easy installation. Compatible with various smart home platforms like Amazon Alexa, Apple HomeKit, and Google Assistant, these sensors provide added security and convenience for indoor locations. With a unit quantity of 10 and a model from a trusted brand like Honeywell, these magnetic contact sensors are a valuable addition to any home security system.