•Just press the button and the doorbell will ring,and you hear receive chime alarm and immediately know that someone is coming •Operating range up to 150m in an open area when there are no obstructions •Higher penetration without worrying about signal obstruction ensures you will never miss a visitor,even if you are a few rooms away or on another floor •Easy to Install. Just plug the receiver into a socket,and mount the doorbell transmitter on the wall or anywhere you want,the effortless installation •Features 60 chimes and 5 adjustable volume levels. It meets your different needs •Waterproof design,suitable for any home,townhouse,apartment,office,school,hospital,hotel,etc •Thanks to the visual LED flash indicator,you will never miss a visitor even in mute mode Specification: •Model: FA58 •Music: 60 chimes (factory default: Ding Dong Ding Dong) •Volume: 5 levels (can be adjusted to silent mode) •Transmitter: no battery required,press to generate electricity •Receiver: the light turns on when the bell rings,and just plug and play •Receiver voltage: 110V/220V •Transmitter size: 70mm*46mm*24mm •Receiver size: 90mm*56mm*20mm •Wireless remote distance: 150m straight-line distance on the open space (the data comes from the factory laboratory) Package included: •1 x Receiver •1 x Transmitter •1 x English User Manual •1 x Installation Tool Kit •Other things not included