[Long Range Signal]The penetrating wireless signal can be transmitted up to 300m in an open space and at a long distance even with many obstacles (doors, walls).[36 Melodies and 4-Volume Levels]36 CD quality ringtones are yours to choose from by pressing the button on the receiver, with 4 adjustable volume levels 25dB-85dB.[Waterproof Doorbell]The superior material transmitter button is IP44 standard waterproof, stable performance is guaranteed for outdoor use, no worry for all weather conditions.[Flash LED]Blue LED Flash at the button and receiver is a visual cue for host and visitor, it is also a fun and thoughtful design for the hearing impaired, as it lights up when in use. [Easy Installation]2 steps Connect the portable receiver to any sector, and stick the transmitter on the wall with the patch or screw provided. The receiver does not require a battery. Unplug the receiver so that the chime no longer sounds.300 meter long beachThe signal can be transmitted up to 300 meters in open space. Connect the receiver in a room at the back of the first floor, press the button on the transmitter on the ground floor, the two respond very well even with spaces, walls, doors between them.The frequency between the two is unique, you will have no worries about interference with other remote control devices.Easy to InstallSimply plug the receiver into an outlet and secure the transmitter to the wall or door frame using the included tape or screws.36 Melodies and 4-Level VolumeOffering 36 tunes to choose from with a clear and pleasant sound, the doorbell enriches your daily life by entertaining you and your children. There are 4 volume levels available, you can adjust according to circumstances.Blue LED indicatorThe button pressed, a blue light flash will flash on the transmitter and the receiver, clear indication.Packaging:1 * Waterproof Transmitter(battery included)1 * Receiver1 * Double-sided tape2 * Screws2 * Anchors1 * Screwdriver1 * User ManualNote:Remove the insulating tape before connecting the receiver.Although the transmitter can withstand harsh climates with IP44 protection, it is best not to expose it to direct sunlight and rain.