Product Features: Pet Chime (receiver) is wall mountable or stands on a table. Pet Chime is a Wireless transmitter (Paw) works up to 100 ft. (30.5m) away from receiver. Multiple paws will trigger a single Pet Chime receiver. Transmitter Paw operates on one 9-Volt battery. (Not included). Receiver operates on 3 AA batteries. (Not included). One-year warranty.