Sanjie Door Chime,Wireless Door Chimes When Door Opens Entry Alarm for Home/Business/Office/Store with 800ft Range,55 Chimes and 5 Adjustable Volume Door Ringer Alert

【Product up-gradation】The upgraded door sensor chime can make each battery use 100,000 times, easy to use 3-5 years, you no longer have to frequently replace the battery
【Door chimes when door opens】This wireless door chime can be a good reminder for you if you have toddler who try to sneak out of their bed room or help alert you the elderly with dementia who is trying to get out of the house.
【Wide Working Range】:This wireless door open chime for home is up to 600 ft in open area,The 55 ringtone options match different ringtones to different doors so you know which one opens
【Mute to 110dB】 5 adjustable volume levels. The max volume 110dB is loud enough to be heard anywhere in the house even basement, you will never miss out an alert. Prefer not to be disturbed? Set it to mute.
50 Sensor Expandable: The receiver can be paired up to 50 chime sensors/the door sensor can be paired up to 50 receivers. Can be used to install in your dining room, bedroom, living room, garage, yard, or your store and office.