This Honeywell 5816 5816WMWH wireless door/window transmitter is the perfect addition to your home security system. It is compatible with Windows and has a sleek white color that will match any decor. The transmitter is brand new and was manufactured in 2017. It comes with magnets for easy installation and can be used with remotes and other wireless transmitters. This device will help keep your home secure and give you peace of mind.