Product Features:

Environmentally friendly wireless doorbell, inspired by creative "Energy Harvesting Technology".
No need battery for the transmitter button! Just generate the power with your magic finger press!! Save your Money for batteries!
• True Wireless No need battery door bell. Creative self-powered technology that solved the battery change bothers.
• Supper easy , Install within minutes. All you have to do is plug in the receiver bell on the socket and stick the transmitter on the wall.
• Certified by water proof test. Even Immersed in water!
• Long range upto 330 ft / 100 m in open area. Additional bell pushes or chimes can be added for larger space.
• 3 Level volum can be adjusted, high to low. Maximum 110dB.
• 25 tunes to choose that are clear, pleasant, and powerful.
• Designed coding system that you can relay the signal for larger space by adding the chime receiver.

Package Include:

• 1x Outdoor Transmitter ( 3.2*3.2*0.3 inches)
• 1x Indoor Receiver (3.2*3.2*2 inches)
• 1x Additional 3M double-sided adhesive tape
• 2x Screws (with hole fillers)
• 1x English User Manual