Telephone Ring Signaller

LED - Light Emitting Diode - a small light source

Batteries - Portable Power sources in cell form

phone - Short for telephone. A device that transmits sound allowing point to point communication over long distances

Cable - A series of wires bonded to form a single thread

Wall - A physical barrier between two areas

Telephone - A device used for communicating audio over long distances

Size - is the measurement of how big an object is in space.

LED - Light Emitting Diode. A bulb that is very efficient at producing light. Often small.

Metre - 100cm. A unit of length.

Install - A process of putting materials together to create a finished product.

Chemist.net is an online pharmacy committed to maintaining high standards and competitive pricing. Since opening its site in 2008, the company has strived to build good relationships with its suppliers to provide a wide range of quality products. Chemist.net is also dedicated to providing excellent levels of customer service, with fully qualified pharmacists on hand to answer any enquiries by either telephone or email. The online ordering system allows for the same stringent safety procedures as those followed by standard pharmacies, and Chemist.net adheres to all UK legal regulations and health and safety standards. A wide range of products are sold, including medicines, first aid supplies, travel health products, weight loss aids, blood pressure monitors, vitamin supplements, baby products such as bottles, sterilisers and creams, toiletries, cosmetics and fragrances, mobility aids and sexual health products. Chemist.net can also deliver NHS prescriptions to customers' doors through a simple online process.