My Doggy Place - Dog Pet Children Toddler, Wireless Doorbell, No Batteries Required, Electronic Chime Bell, Potty Training, for Small, Medium, Large Dogs NEVER BUY BATTERIES AGAIN: No Batteries Required for Transmitter and Receiver, self powered, save money, avoid headaches with unnecessary wires, never worry again! NO MORE POTTY ACCIDENTS: Train your dog to ring the doorbell to go outside for potty. Keep your pooch safe when they need to come back in the house! PORTABLE & EASY TO USE: Use for the front and back door, flexible placement on the wall, floor, ground. Use for Dogs, even Kids and Toddlers! FEATURES: 4 adjustable volumes, ultra light pressure trigger, waterproof for outdoor usage, sync to two transmitters, 100 foot range PACKAGE INCLUDES: User Manual, Easy Wall Mount 3M Pad, Wall Mount Screws, Plastic Wall Mounts Included