[Battery-powered doorbell] Battery-powered wireless doorbell is powered by 3 AAA batteries (included) so no power outlet needs to be used. The receiver can be wall-mounted with screws and it is easy to place the doorbell on a desk. You can also take it to the garden, basement, garage or bedroom..[WIRELESS DOORBELL WITH TOUCH BUTTON] The touch button is our design of wireless doorbells. With the function of IP44 dustproof and waterproof, higher sensitivity and lower power consumption, the push button can be installed indoors and outdoors..[FLASHING LIGHT DOORBELL] Wireless doorbells for home have 36 melodies and 4 volume levels (silent-low-medium-high). The built-in large LED indicator provides additional help for the hearing impaired doorbell..[LONG OPERATING RANGE UP TO 300 M] The strong wireless signal of the wireless doorbell is up to 300 m in open area and does not interfere with other equipment in your home or at your neighbors..[EASY TO INSTALL DOORBELL] Easily install 3 AAA batteries in the receivers and attach the transmitter (pull out the insulation sheet inside) to the door frame. Do not install too close to metal or machinery such as a TV.