Product: Door Chime Wireless Door Sensor, Coolqiya Door Open Alarm Chime Kit, Wireless Entry Alert System for Christmas Day Party/Home/Office/Stores, Operating at 600FT Range with 58 Melodies & LED Indicator
Brand: Coolqiya
Color: 3 Door Sensors + 2 Plug-in Receivers(Black)
How to set the tone and have it stay (How to pair door sensor to receiver)? 
 1. Pick the desired sound; 
 2. press and hold the volume button of the receiver for 5 seconds till it blink with "ding" sound, and then separate two stripes of door sensor to activate the receiver. You will hear the receiver ring the sound you selected, that means you paired them successfully.
🎅【Multiple Ringtones】- 600 FT in open area range, with 58 ringtones & 5 levels volume to meet your needs for different occasions. Great choice for Christmas Day Party/Christmas Gift; LED indicators are suitable for the elderly and hearing impaired
💖【How Does Door Sensor Alarm Works?】- Attach 2 sections of sensor to a door/window frame. When you open the door or your pet coming home, it will trigger the alarm unit and ring. 👍Note: The battery level will affect the signal receiving range. It is recommended to change it once every 12 months
🎅【Wireless Door Entry Alert Chime System】- Will Keep track of your little children, use for home to alert you when someone open the door. Also use for business, apartment, garage, basement, office, retail store, classroom and more
💖【Easy To Install & Expand】- Simply get the bell plugged into socket and Tear off the double-sided tape of the sensor and stick it on the door frame. You can add extra 10 receivers/transmitters. 👍Note: If you need to replace music or add a transmitter, please re-match (Hold Receiver's Music Button over 5 seconds to 7 seconds, it will trigger clean pairing function)
🎅【Long-Term Enjoyment】- Long-Term Enjoyment: Coolqiya wireless door chime Approved by FCC, CE, RoHS and other certificates; 💖we provide friendly customer service on our products to assure your long-term enjoyment, please message us for any question, we will always do our best to support you

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