36 Music Tune Melody 2 Remote Control 1 Wireless Doorbell Door Bell Receiver New 100% brand new and high quality. 36 Songs Wireless Musical Doorbells w/ Remote Control. Package icluded the 2 x 12V/23A Battery power for remove control . Unique design,while the doorbell rings the indicator flashes as well. Press the remote control button to trigger the wireless receiver doorbell to chime. No obstruction wirless working distance up to 150 meters and up to 20 meters while obstructions exist. Easy to install,Double side stickers on the back of the remote control button and installation holes back of the doorbell.