Frontier TM619H2 Digital Timer Programmable Time Switch. Here’s a 4 pin programmable timer switch for home-usage. It employs a microprocessor which makes it reliable in terms of how it functions.

This is simple circuit that illustrates the function of the programmable unijunction transistor. It may be quickly wired on a proto-board. PUT Flasher. ... Use of this device in a thyristor switch ...

Our Verdict. While more costly than some options, programmable timer switches or timer plugs for instance, the WeMo system is a worthy option, thanks to its simplicity and scalability.