Holtek HT9170D 18SOP DTMF Receiver

Digital - A system that uses only 0s and 1s to transmit data

Frequency - A term used to describe how often something is done

Frequency - A wave frequency is the number of times a wave repeats within a given time

Filter - A device used to separate mixtures

Filter - An optical device to remove or enhance particular wavelengths of light.

Components - Multiple items used to complete the product.

Voltage - A measurement of volts.

Performance - When someone is presenting a form of entertainment, also how well someone is doing within a role.

Rapid have established themselves as a leading online supplier of electrical products, cables, tools, electrical components and educational resources. Through their website you can purchase a variety of meters and resistors, batteries, electrical sockets, fuses and circuit breakers, communications cables, miniature power tools, small hand tools, rivets, tapes and adhesives, office equipment and educational books and equipment. As well as selling to the general public their extensive product selections means they also sell to trade customers. They also have great links with educational customers supplying products to many schools, colleges and universities. They also offer a great turnaround on delivery meaning that your products can be with you the very next day. Some of the top brands that they stock include Recom, Draper, Bosch, Hammond, Duracell, Kingbright, Arcol and Neutrik.