Description MP3 music doorbell is a multi-function doorbell. It can be connected with computer by USB cable to download or delete the MP3 songs easily. It supports expanding capacity at maximum 64GB memory of TF card, MP3 music tone can be set as the selectable Chime.Wireless doorbell is an ideal unit for easily installing a doorbell without the hassle of wiring. Simply plug the receiver to an AC outlet and mount the transmitter where needed and you are ready to go! The doorbell features 52 chimes and four levels of volume to suit your needs and can reach a distance of up to 1,000 ft when there are no obstructions.   This item is also ideal for use as panic button for elderly, children, or patients.Features:Easy Set Up: Broken doorbells are hard to replace. With Chimptron's energy-saving wireless doorbell, installation is simple. Our receiver and transmitter are pre-paired for installation.Stylish modern design fits into any home and office.52 chimes (16 chord) to choose from and 4 steps volume control (25~110dB).Simple to use and easy-to-install without the hassle of running any wires.With up to 1,000 ft operating range in open spaceIP44 waterproof transmitter with soft silicon press button, it is able to withstand rain or shine.Eye-catching backlight flashes when someone pushes the doorbell.Different quantity of push unit (transmitter) and chime unit (receiver) are free to pair together.If paired multiple push units in one system,the chime can be set to different for each push unit.Using learning code to prevent interference from other wireless transmitters.Chime unit: powered by 3 x AA batteries; 15 hours for continuous music play. 8 months stand by; push unit unit: 12V batteryEasy to choose your change and select your favorite ringtone with forward and backward button.Automatically save selected ringtone after power off.Approved with CE, FCC, RoHS Certification.Specification:Receiver (Chime):Working voltage:3.3V-5V (3pcs AA battery)Working current: < 300mAStatic Current:< 500µAReceiver Sensitivity:-110DBMSpeaker: 8O1WTransmitter (Push button):Working voltage:5V-12V(1pcs 12V 23A battery)Working current:< 30 MaPower consumption:< 16DBM
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