The Wireless Door and Phone Alert Kit provides visual and audible notifications for those with hearing impairment, blindness, and/or low vision. Use the 2 receivers in 2 different rooms so you know when a call is coming in or you have a visitor at your front door.
—Wireless: works up to 393 feet away (frequency 433 MHz)
—Doorbell transmitter IP 44 rated (weatherproof/sealed for outdoor use)— 1pcs x CR2032 button cell
—CE and FCC listed
—RoHS compliant
—Rated voltage: 4.5V range
—Rated Power: less than 5W
—Receiver: 3pcs x AAA batteries x 2 (batteries included)
—Easy to install: comes with mounting hardware
—Manufacturer's 1-year warranty policies
—3.5 x 3.25 x 5.5 in. / 0.7 lbs