POWERFUL TRANSMISSION SIGNAL It has a powerful wireless signal up to 300M(984FT). The transmitter has a design . This doorbell can also help some seniors who are not easy to move. When they need help, they can notify their families with the touch of a button. DIFFERENT TONES FOR YOU: There are many interesting pieces to choose from, and 52 different ringtones are available for sound and ringtone selection. Each receiver can have a different tone. Whenever someone rings your wireless doorbell, you will enjoy a pleasant melody Suitable for families, offices, hotels, factories, etc. In addition, the product is covering your home or business in an open space, this doorbell ensures that you will never miss any visitors. WIRELESS DOORBELL 1X transmitter, the transmitter requires a 12V23A battery (this product does not include a battery), long service life, can work between -20 ° C to 60 ° C, can withstand harsh Weather conditions. Ideal for large homes, flats, schools or offices, the strong and stable signal ensures you can hear the alert from anywhere, even in the garden, basement or upper floors, so you’ll never miss a visit from family, guests or the postman again, Manufacturer: GFJryET