The Magnetic Door Contact Sensor is a set of 7 surface-mounted alarms designed for doors and windows. Manufactured by Sentrol, the sensors feature brown terminals for easy installation. These switch-type sensors are essential components of an alarm system, providing additional security and surveillance for facilities and businesses. With reliable performance and a trusted brand behind them, these magnetic door contact sensors offer peace of mind and protection against potential intrusions.  Terminal wire connections make for quick installation on existing alarms.