Description
【Lifetime battery free】Press the button to generate electricity, through the principle of electromagnetic effect. You don’t need to install a battery for the dog doorbell for life. Energy saving and environmental protection.With this upgraded smart bell, you no longer have to worry about the doorbell running out of power! 【Easy-to-use】Oalyip self-powered wireless dog potty training door bell. Bell rings using just 0.75 lbs of pressure, suitable for all small, medium and large dogs. It is not rec
