Wireless Door Bell Doorbell Digital Cordless Portable 32 Chime 100M Range Home Features No wiring required, water proof and very easy to fit 100 metre range - Installed in Seconds TO ENSURE BATTERY IS FULL WHEN FIRST COMMISSIONED andmiddot 36 different tunes Insert the 2 x AAA batteries (not included) into the receiver. Colour: White Precautions 1. When installing the doorbell, it should not be close to metal objects, so as to prevent the metal magnetic field from affecting the use effect of the doorbell 2. Buttons and doorbells are paired and used with the same frequency code, and non-paired buttons cannot be used for operation 3. Do not install doorbells or buttons in places exposed to sunlight and rain 4. Use high-quality alkaline batteries as much as possible, and regularly check whether the battery leaks corrodes the circuit board PACKAGE INCLUDES: 1 x Wireless door bell button 1 x Door bell receiver 1 x 12V battery