300m Range in Open AreaExtremely long 300m connection range in open area. The strong and stable radio signal ensures that you can hear the doorbell clearly even if you are a few rooms away or on the other floor, and the signal can pass through obstacles very well. This wireless doorbell can be used in apartments, villas, offices, commercial premises or in the garden. 4 level volume and 45 ringtones The wireless doorbell receiver has 5 volume levels Sound 45 ringtone options, from classic doorbell sound to rhythmic melodies for all conditions. Easy to Install Plug the doorbell receiver into an outlet, attach the transmitter with included accessories and Tear off the insulation film before use. Whether you're cooking in the kitchen or pulling weeds in the garden, this radio doorbell will let you know the right time. Don't miss any visitors! Easy to install Plug the doorbell receiver into an outlet, attach the transmitter with the included accessories, and tear off the insulation film before use. Whether you're cooking in the kitchen or pulling weeds in the garden, this radio doorbell will let you know the right time. Don't miss any visitors! Wide ApplicabilityIt can be used not only as a doorbell, but also as a pager for pregnant women and the elderly. One key call is convenient for family members to take care of timely. Wireless doorbell: This kit This doorbell helps you protect your home and family, and it can also be used as a musical alarm for your child and a convenient pager for the elderly in terms of timely care. It is a must-have accessory for home, garden, nursing home, office, hospital, store, etc. Long operating distance The wireless doorbell supports the widest connection up to 300 meters in open areas. With ultra-l wireless range Blue LED light The wireless doorbell button and receiver both have an LED indicator. When you press the doorbell button, the flashing blue lights on the doorbell transmitter and receiver will flash simultaneously. The blue LED lights receiver is ideal for the elderly, hard of hearing. Easy to install Simply plug the doorbell receiver into an outlet and secure the transmitter with the supplied accessories. The push button can be fixed to the door frame with screws or fixed with double-sided adhesive tapes. please tear off the insulation film before use.