Chibery 10 Pack Cabinet Pulls, 3.75 Inch(96 mm) Hole Centers Matte Black Cabinet Handles, Zinc Alloy Hardware for Kitchen Cabinets Cupboard Drawer Closet Dressers 3-3/4" healthDE_Nov2023 There is an USB port

There is an USB port on the side of the keypad as an emergency power supply just in case that it runs out of battery suddenly

night duty and more

VCC:3-10V GND is grounded Note: The installation of electronic modules requires basic knowledge and requires a certain electronic professional foundation and hands-on ability

DURABLE QUALITY

Copyright Design: this doorbell button is made of solid and sleek metal material that is waterproof and reliable

Chibery 10 Pack Cabinet Pulls, 3.75 Inch(96 mm) Hole Centers Matte Black Cabinet Handles, Zinc Alloy Hardware for Kitchen Cabinets Cupboard Drawer Closet Dressers 3-3/4" healthDE_Nov2023 There is an USB portChibery 10 Pack Cabinet Pulls, 3. 75 Inch(96 mm) Hole Centers Matte Black Cabinet Handles, Zinc Alloy Hardware for Kitchen Cabinets Cupboard Drawer Closet Dressers Product Features Dimensions Hole Centers(CC): 3 3 4" (96 mm), Overall Length: 4. 4" (113 mm), Projection: 0. 8" (20 mm). Please measure your cabinet and decide what size you need. Two Types of Mounting Screws a set will be provided. Each puller contains 2 different lengths of screws (1" and