This Intermatic Lamp Lyter is an incredibly useful timer switch that is perfect for those who want to maintain security in their homes. It has a 24-hour automatic plug in feature that makes it easy to use. The timer switch is perfect for a variety of uses, whether you want to use it for your home security system or for other home improvement projects. The timer switch is made by Intermatic, a trusted brand in the industry. The model is D-121 and it is a plug-in type timer switch. It is perfect for use in security timers, home security, home improvement, and home & garden categories. With its easy-to-use features and reliable performance, this timer switch is a great investment for anyone who wants to keep their home safe and secure.