Musical Noise Announces The Arrival Or Visitors 1. The Compact and Elegant Mounting Design Saves Trouble In Mounting and Expenses and Gives No Influence To The Surface Of Decoration. 2. The Strong Digital Anti-Interference prevents Interference Between Users and Misringing. 3. The Ultra-Distance Remote Control (120 Meters) Meets The Need Of various and High Buildings. 4. European Style and Delicate Streamlined Design Brings Your Home Beauty. 5. With Loud and Music. The Tone Has Been Identified By Music Master. It's Really The Guarantee Of High Quality and Confidence. 6. With Very Low Power Consumption, Less Than 5W. Transmitter's Battery Can Be Used More Than 1 Year. 7. The Built-In Stereo Loudspeakers Gives Sweet and Clear Sounds So The Doorbells Are Suitable For Households, Offices, Factories and Hotels. 8. Multimusic Sound (Model) For Choice. 9. Button Transmitter Battery: 12V 23A Model For Choice: 1. Ding Dong (Double) 2. Soft Ding Dong 3. rance 4. Open The Door Please 5. Ding Dong (single) 6. Golden Melody 7. Twelve-Piece Melody 8. English 9. Siemens 10. ArabicModel: P-638AC