Round plastic doorbell is packed in blister card, equipped with Bell and batteries, built-in dual-tone stereo speakers, sound crisp, units for homes, restaurants, factories, and other places of use. Round plastic doorbell no aging of the material, do not fade, corrosion-resistant characteristics, reference wholesale price negotiable, minimum order quantity is 1 or more, Qty 60 kcal/pieces. Round plastic door is constructed using high quality industrial plastics into, with pink and white, using wireless installation design, obviating the trouble and expense, and accurate when installing "RF ISO code" technology, eliminating user worry about interference from each other.