1）55 first polyphonic ring tones are optional: users can set any music as doorbell ringtone according to personal preference
2）Learning code: Users can flexibly increase or decrease the receiver and transmitter according to their needs. The pairing
method is simple and easy to operate.
3）Memory function: The ringtone that has been set after power off can be locked by memory, and still ring according to
the set ringtone after power-on.
4）In the open environment, the farthest effective working distance can reach 950ft: remote control, stable signal, no interference
5）Transmitter waterproof grade IP55: Built-in waterproof rubber ring, can work normally in rainy days, will not miss any visitors
6）5-level volume adjustable: 0-110 decibels, unique mute-free mode, giving users a better home experience

Technical Parameters

-Working temperature: -27.4℉ to +158℉
-Operating frequency: 433.92MHz ± 280KHz
-Transmitter battery: 23A12V alkaline zinc-manganese battery
-Receiver voltage: AC 110~260 volts (wide voltage)

packing list

-Receiver X1
-Transmitter X2
-3M double-sided tape X4
-Instruction manual X1
-Mini screwdriver X1

Precautions:

* Please test the working distance between the receiver and the transmitter before installing and fixing!
* Do not install the transmitter on the security door. The metal will weaken the signal and affect the remote control distance!
* Do not install the receiver next to electric appliances such as TV sets, induction cookers, microwave ovens, etc. with electromagnetic waves!
* We care about every customer,if you have any problem or suggestion,please feel free concact to us,your any opinion is important and a great
encouragement to us!