Honeywell DC313 Home/Garden Doorbells - Honeywell DC313NFB, This front and back door kit from Honeywell has been manufactured to a high standard, with both reliability and quality in mind. Stylish and compact with superior sound quality, this superb doorbell has been perfectly formed for your home and comes with adjustable volume. Among the many other features is the innovative LED strobe, alerting you to the presence of a visitor when the doorbell can\'t be heard. Honeywell DC313NFB Front & Back Door Doorbell Kit (1 Portable, 2 Pushes)