Features:
1. No wiring, easy installation
2. Long distance, open up to 70-110M
3 high-frequency vibration body, strong penetration
4.32 music ringtones optional
5. At the same time when the music sounds, flashing LED lights.
6. A variety of styles to choose from.
Product Name: Crystal Wireless Flash Doorbell
Product specification:
Receiver: 2 batteries on the 7th
Transmitter: 1 12V23A battery
Frequency: 315Hz
Quantity: 100/carton
Usage: After installing the battery, pull the switch of the receiver to the position of the selected (double arrow). (Every time you press it, you will change it for a ringtone. If you want to fix a certain music, pull the switch to the tuning position (music symbol). Can be fixed
  Precautions 
★ It is not advisable to close the metal objects when installing the doorbell, so as to avoid the influence of the metal magnetic field on the use of the doorbell;
  ★ The button and the doorbell are paired with the same frequency code. Do not use non-paired buttons to operate.
  ★ Do not install the doorbell or button in the sun and rain;
  ★ Use high-quality alkaline batteries as much as possible, and regularly check whether the battery leaks or erodes the circuit board
 
Package Contents: 1x Doorbell Receiver 1 x Transmitter
Weight: 70g
Receiver size: 9.5 x 5.5 x 2.5 cm
Transmitter size: 7.5 x 3.6 x 2 centimeters