LINEAR / NORTEK SNP00066 KeepSafer Wireless Home Security Alarm Kit The KeepSafer Wireless Home Security System has been protecting homes for years Using reliable radio-frequencies, there's no need to run wires around your home Includes Console and 3 wireless door/window transmitters Also includes an Arm/Disarm remote control Optional peripherals may be added such as motion detectors and connection to a central security station