Sanjie Wireless 1Alert Door Chime with 4 Sensors for Business/Home

🎄[LONG RANGE & EXPANDABLE]: The wireless door sensor chime is 1000 feet far enough to cover every door in your house or store. Each door entry chime can be paired unlimited magnetic sensor, You can also pair different ringtones to each sensor so that you can realize exactly which door is triggered.🔔[DOOR CHIMES WHEN DOOR OPENS FOR BUSINESS]: This business door chime can be used as a doorbell for your retail commercial business to remind you when someone walks into your shop or restaurant, you will never miss any customers.🎅[55Music with Mute to 120 Loud dB]: This door open alert has 5 levels of adjustable volume from 0-110 dB Mute mode, 0dB won't disturb a sleeping baby. Memory function: Keep the previous set tune after re-plugging it☃️ [EASY TO INSTALL] For this door sensor chime for business, please install AFTER pairing, Just plug the receiver into an outlet, and tear the double-side adhesive tape stick door sensors to any doors or windows. entrance chime for business with LED indicators is suitable for the elderly, deaf, and hard of hearing.