Sell Wireless Battery Operated Doorbell Door Chime with 1 Transmitter+1 Receiver best price

Description: Far wireless remote distance is up to 200 meters in the open space, suitable for both household and industrial use. Receiver (indoor unit) is powered by 3pcs AA batteries; Transmitter (Outdoor Unit) is powered by 1pcs 12V battery. (Battery is not included); batteries can be used for about 1 year. 36 melodies and 4 levels adjustable voice volume, reminding you the coming of your guests by lovely songs. All day long anti-interference system, avoid interferences outside or between neighbors. Simple and easy wireless installation with adhesive tape, save troubles and money. Specification: Transmitter Size: approx. 80x45x20mm/3.15x1.77x0.79 inches Receiver Size: approx. 120x85x30mm/4.72x3.35x1.18 inches Outdoor Unit Working Power: 3x AA battery Indoor Unit Working Power: 1x 12V 23A battery Working Distance: 200 meters (open space) Package Includes: 1 Piece Receiver 1 Piece Transmitter 1 Piece Adhesive Tape 2 Pieces Screws