Receiver operating voltage	110V / 220V
Power	<2W
Operating frequency	315MHz
plug Specifications	round plug, flat plug, Germany Regulation, the British Regulatory
Transmitter operating voltage	DC12V (battery: 12V 23A)
Transmitter operating current	<15mA
Battery life	20 times a day, a high-quality battery can use one year
Weight	0.146kg

1. LED indicators: press the launch button, transmitter’ LED on and work, at the same time receiver gets instruction, also send out beautiful music, reminding VIP outside, meantime the receiver of the "blue" LED is accompanied by music regular flicker

2. Wireless doorbell volume adjustment function: Hi (high), Med (middle), Lo (low) three volume available, through the external switch (or key) operation is completed

How to Install the Wireless Home Jingle Bells :

Determine the preferred location for your receiver unit. The receiver unit contains the chime and is best located someplace central in your home. Most receiver units simply mount directly on an AC outlet using the attached plugInstall a new battery in the push button unit. You may need a flat head screwdriver to remove the cover of the unit. The screwdriver is normally inserted into a notch at either end of the unit. Use the screwdriver to gently pry the plastic cover away from the baseTest the door push button prior to mounting the push button unit. This assures you the chime unit is functioning and allows you to gauge the volume at the selected locationAdjust the transmitter frequency from the push button if the chime in the receiver unit does not sound. Remove the cover as described in Step 2 and locate the frequency settingsMake additional adjustments, depending on your specific model, for volume and chime ring tone. Most models feature adjustable ring tones so you can discern which door's push button has been activated. These adjustments are made by removing the cover of the receiver unit. Adjust the chime volume and ring tone frequencies according to the labeled settingsMount the push button unit, or units, beside the desired doors. Some units have holes in the base for mounting screws. If so, you will need to remove the cover and use your screwdriver to drive the screws into the wall. Other units use a strong adhesive strip that allows for quick and easy mounting to vinyl or metal surfaces