☛Welcome to Quinlirra Direct Store. Our store is well supplied with our own suppliers and factories. We are committed to bringing high quality products at great prices to our customers. Please feel free to contact us with any questions.┃✸┃ Battery Type Wireless Home Doorbell, Colorful Strong Flash, One Button Emergency Call Bell, Elderly Pager Features: Colorful flashing light while beling which is very helpful for deaf people and hearing impaired people Independent base for easy There are two hooks at the bottom of the base, which can hang keys,working cards or any other light (NO hanging of heavy objects) Easy installation NO wiring needed AA-1.5V batteries needed( Excluding ), it can work without power. Use the tape or screws and stickit to the outdoor wall ( tape and screws are in packing) DO not install the transmitter on metal The receiver advantage: Multicolor Cycle Flashing Product Description: Product includes: 1x receiver, 1x transmitter Quinlirra Battery Type Wireless Home Doorbell, Colorful Strong Flash, One Button Emergency Call Bell, Elderly Pager Office Supplies Mothers Day Gifts Clearance Items Colorful flashing light while beling which is very helpful for deaf people and hearing impaired people Independent base for easy There are two hooks at the bottom of the base, which can hang keys,working cards or any other light (NO hanging of heavy objects) Easy installation NO wiring needed AA-1.5V batteries needed( Excluding ), it can work without power. Use the tape or screws and stickit to the outdoor wall ( tape and screws are in packing) DO not install the transmitter on metal The receiver advantage: Multicolor Cycle Flashing