Dealing with summer heat is extra awful when trying to get a good night's sleep. Rather than suffering through the warmer months, use a few appliances to keep your bedroom at a cool, comfortable temperature. This includes utilizing a dehumidifier, which will not alternate room temperature but will remove humidity.
A dongle is a small piece of hardware that connects to another device to provide it with additional functionality.
Magnetic reed switches are the most common devices used in modern alarm systems. Also referred to as magnetic sensors or contacts, these devices tell a security panel when a door or window is open or closed. Reed switches consist of two metal strips sealed inside a glass tube and attached to external wire leads.