Product Features:

* Wireless Doorbell for Home Classroom Office Business, 1300ft Long Range, Adjustable Volume 48 Chimes with LED Flash Plug in Door Chime Receiver & 10-Year Battery Life Waterproof Doorbell Button

* Bedroom /apartment office Wireless Doorbell
*1 set : 1 receiver + 1 doorbell button ,400M/1300ft wireless range
*Wire free: No wireless in-wall installation , wireless doorbell is battery operated (Maxcell CR2032)for fast and easy use .
Lifetime lasts 300.000 times .The portable wireless plug-in receiver plugs into any standard outlet.
*Free style combo : Each receiver can be paired with up to 32 transmitters like magnetic sensor ,PIR motion sensor etc .Each transmitter can be paired with mutil-receivers
*Ringtone :Provide 48 different options of ringtons , 5 volumes for adjustment
*Never miss anyone coming through your door with a wireless doorbell
*Built-in Led Indicator : The receiver and transmitter feature LED indicators that create visual alerts for the hearing impaired

If you want to know more product detailed information,pls click below link.

https://kingserry.en.alibaba.com/product/1600336147828-813314463/Wireless_Doorbell_for_Home_Classroom_Office_Business_1300ft_Long_Range_Adjustable_Volume_48_Chimes_LED_Flash_Plug_in_Doorbell.html?spm=a2700.shop_plgr.41413.13.5b302b8ePAZkWD