We test it before delivery to make sure it's working perfect!

Please make sure your old remote control is same with picture.

6 Month Replacement Guarantee.

Pushing a button on a remote control sets in motion a series of events that causes the controlled device to carry out a command. The process works something like this:You push the "volume up" button on your remote control, causing it to touch the contact beneath it and complete the "volume up" circuit on the circuit board. The integrated circuit detects this.The integrated circuit sends the binary "volume up" command to the LED at the front of the remote.The LED sends out a series of light pulses that corresponds to the binary "volume up" command.

After-sales service:

All Stuff Through Strict Test Before Shipping. And We Guarantee It's Good, Please Make Sure The Package Is In Good Situation When You Receive It.After You Got The Items, If You Have Any Problems With The Goods, Please Contact Us Anytime With No Hesitate,We Will Reply You Within 2 Hours, And We Will Try Our Best To Help you to Solve Your Questions or Problems.

Our Service Purpose Is To Make Every Customer Have A Good Shopping Experience.

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Specifications of SONY Universal TV Remote Control For Android & Smart TV