VOXONWireless Doorbell, Wall Plug-in Cordless Doorbell Waterproof Door Bell Chime Kit with 350m Wireless Range, 4-Level Volume & Blue LED Light, Best for Plug in Door Entry Bell

Wireless Doorbell, Plug in Doorbell, VOXON Waterproof Doorbell, 400M (1,312ft) Wireless Range, IP65 Cordless Door Bell, LED Flash, 60 Melodies, 5 Level Volume,36-Month Warranty [Energy Class A+++]

LiCB 23A A23 12V Alkaline Battery (5PCS)

SECRUI Wireless Doorbell, Plug in Waterproof Battery Operated Cordless Electric Door Bells at 1,000 Feet Long Range Chimes Volume Adjustable 120 DB Loud for Deaf Easy Install for Home, School, Office