[No Battery = Peace of Mind]: Why choose a battery-free system? We all know that batteries don't like humidity, sub-zero temperatures and intense heat at all. Rest assured, it's perfect for outdoor use, the battery-free wireless doorbell is definitely not afraid of bad weather. [Don't Miss Your Package]: Another delivery notice in your mailbox? Or impatient customers because you're out of stock at your store? Yes... tough luck, the wireless doorbell's battery is dead anyway, and of course, that always happens at the wrong time! Incredible Technology: Guaranteed to work every time. We use a state-of-the-art automatic feeding mechanism that is reliable, robust and efficient. In addition, the extended antenna gives you excellent coverage and easily reaches through walls and panels. ECONOMICAL AND ENVIRONMENTALLY FRIENDLY: You don't need any inventory or batteries at home. You can save money by using a chime kit without batteries. In addition, by avoiding battery replacement, you can make