Wireless Doorbell/Customer Service Bell:

For use with front door, back door or customer service area. Includes separate ringer and receiver. Water-resistant pushbutton ringer may be used outdoors or indoors and attaches easily with screws or foam tape, both included. Wireless receiver operates up to 200 feet from ringer and is easily hung on nail or hook, not included. Ringer is paired by code with chip inside receiver so multiple doorbells in close proximity may be used and only desired receiver will sound. Pleasant ding-dong tone is one of 32 ring options. Operates on 3 AA batteries, not included, plus one 12V A23 battery, included.   FCC certified