LEMONBEST Portable Cordless Remote 2 Plug In Wireless Digital Doorbell Push Button With LED Indicators, 38 Different Chimes and Long Receiving Distance One remote doorbell button, two plug-in doorbells with 38 polyphony sounds. The volume can be adjusted. Remote control range can be up to 150meters. Plug in and use-no set up required. Flash light ON when visitors press the remote button. You can install the doorbells in kitchen, back yard, bedroom, etc.