Surfou Door Chime Alarms When Opened, Wireless Sound Contact Bell Alert Security Sensor, 600Ft Range 55 Ringers 5 Volume, Open D

[Effortless Installation]: Installing Our Door Chime Is A Breeze. Simply Plug The Receiver Into Any Standard Outlet And Use The Double-Sided Adhesive Tape Provided To Attach The Door Sensor To Your Door Or Window. No Complicated Wiring Or Professional Installation Required.Just Remember To Remove The Insulating Paper From The Sensor Before Use. | [24/7 Lifeguard For Your Family/Business]: This Child/ Home Door Sensor Alerts When Burglar Opens Door And Helps Deter Break-Ins(Entry Alert Chime Activates When Magnetic Sensor Separates).Ensure The Safety And Security Of Your Business Premises With Our Reliable Entrance Alert System. The Door Sensor Immediately Detects When Someone Enters Your Establishment, Triggering An Instant Alert To Notify You Of Their Presence. | [Wide Coverage Area]: This Wireless Door Open Chime Is Up To 1000Ft In Open Area,Our Door Chime System Provides Reliable Coverage For Businesses Of All Sizes. Whether You Have A Small Storefront Or A Large Commercial Space, The Wireless Technology Ensures That You Receive Alerts Promptly, Regardless Of Your Location Within The Premises. Say Goodbye To Missed Entries Or Unnoticed Visitors. | [55 Chimes And 5 Adjustable Volume]: 5 Adjustable Volume Levels From 0-110Db.55 Elegant Music From The Traditional''Ding Dong'' To Various Well Know Chimes Including Christmas Song:We Wish You A Merry Chrisrmas.Memory Function: The Built-In Memory Chip Remembers Your Last Setting Tune Without Having To Reset It After A Power Failure. | [Extendable Doorbell Chime System]: The Door Chime Is Designed To Aesthetically Fit All Types Of Homes And Is Also Suitable For Offices, Stores, Business And Many More.With Up To 64,000 Learning Codes, You Can Add Multiple Receivers And Transmitters Of The Same Model To Expand Your Door Chime System.