Hardware Schlage Keepsafer 3" large Magnetic Sensor Security Switch on-off Kit

Description

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large Heavy Duty Surface Mounted Magnetic 3 inch Switch.
Security Item Brand New.
Schlage Keepsafer Sensor Switch Set / well made.
Use as early warning or intruder alarm system/ this is magnetic switch only / power supply or buzzer provided by you.
Operates on low DC voltage power supply, 9 volt battery or even a 7-12 volt DC plug in wall adapter with your buzzer connected.
These magnetic switches are designed primarily to serve as sensing devices to detect the opening of a door or window; to assure that a protected door is securely under surveillance; to serve as a trigger for a wall-mounted exit alarm; to signal that a door has been inadvertently left open; and to be used as a direct switch to set off many kinds of audio and visual alarms systems.
Shipping: USPS Insured and Tracking