CallToU Wireless Door Chimes with Adjustable Vibration – Door Alert System for Home, Office, and Business (2 Sensors + 1 Receiver)

About this item

• EXPANDABLE 20 RECEIVERS: Each receiver can be used with 20 sensors, and each sensor can be paired with an unlimited number of receivers. Can be used to install in your pool, home doors and windows, garage, basement or your shop and office.
• ENSURE YOUR RESIDENTIAL/OFFICE SECURITY: The wireless door sensor chime features an extensive detection span of almost 500 feet. You'll hear the doorbell chime whenever visitors or guests come to your residence, shop, or workplace. This wireless door alert system includes a sensor and a low battery notification function, ensuring you never overlook the alert.
• WHICH DOOR OR WINDOW WAS OPENED: The wireless door chime receiver has numbers 1-20. When the door is opened, the digital display will be accompanied by a ring tone. By the number, you will know which door or window is opened.
• 2 RINGTONES & VIBRATION: The wireless door open chime for home receiver has 2 different chime options and 5 adjustable volume levels, each with a strong vibration - the vibration can be turned off. Don't want to be disturbed by noise? Set Mute + Vibrate for a comfortable and safe environment.
• FOR CHILD AND ELDERLY CARE: If you have young children trying to sneak out of their bedrooms, or to help alert you to an elderly person with dementia trying to leave the house. This wireless window magnetic sensors is a great way to alert you. Vibration and digital display design, so that hearing-impaired people can take care of them with peace of mind.