Thank you for viewing. The box and instruction manual are not included. This is a doorbell chime that was used at the entrance of my home. It was attached using screws. Because it's wireless, there's no need for troublesome wiring, making it easy for anyone to install and use immediately. There are 32 different call sounds, and you can set it to your favorite sound. The receiver has a convenient clip on the back for hanging. The transmitter can be attached with double-sided tape or screws. For screws, open the "OPEN" section on the bottom with a flathead screwdriver, then screw it in and replace the lid. To change the sound, open the transmitter and press the square black button above the round button battery. The sound will not play unless you insert two AA batteries into the receiver before operating it. Model number: OCH-R40 The instruction manual can be found by searching for "Wireless Call Chime OCH-R40". Thank you.