How to useOpen the sensor cover, install 1 x 9V battery, then open the switch in circuit board Open the receiver cover – install 2 x AA batteries Switch on Receiver by pushing switch on the side Adjust the receiver tone volume, the power switch to the mid-position is low-volume, high-volume on uppermost position Adjust the angle of the sensor to a suitable position, when the guest enters its detection range, the receiver automatically sends sweet music ringtones, the red LED lights When you open the sensor power, wireless doorbell is required for each SELF-TEST function, about 10 seconds, and then enter the normal working condition. Infrared detect technology Simple to use and easy to installLong sensing distance 38 songs for choice in total, you can choose the song throgh click the music key on the side of receiver 3 levels of volume for adjust, you can adjust it by click the volume key on the side of receiver The receiver has the function to set voiced noiseless modes, you need to adjust it by click the volume key on the side of receiver It is functional for home, office, or commercial buildings The transmitter is powered by 3 AA batteries, the baterries are not included in this item
