Ke Peng plastic door is constructed using high quality industrial plastics into, using wireless installation design, reducing the trouble and expense of installation and accurate "RF ISO code" technology from interfering with each other. Ke Peng plastic doorbell not aging, fading and corrosion of materials and so on, using battery-powered, blister card packaging, wholesale reference price negotiable, Qty 60 kcal/pieces. Ke Peng plastic doorbell sound built-in dual stereo speakers, sound crisp, units for homes, restaurants, factories, and other places of use, minimum order quantity is 1 or more.