Review on 58 Ringtones Wireless Doorbells Chimes: Waterproof Remote Buttons, No Battery Required For Receiver - Coolqiya Home Kit by Nick Cleary

First, I like this product. It is a good product. Tone is acceptable, I like no batteries in the main units. Well made and looks good. I like the subtle light for the hearing impaired.However, the instruction translation has issues and are quite frankly incomplete. But good value if you are clever and willing to "manipulate your environment."You receive 3 receivers and two buttons. But it is not obvious or covered in the instructions how to take full advantage of the units. Also, I had problems with the second button (sender) unit activating the other receivers.So:1.) Follow what you can read as the instructions are fair.2.) But, don't wait until a trouble shooting session to "de-program" the receivers . Right out of the box, you should hold down the ring tone button in the down position until you get an alert which will remove any other previous programing that the unit received. This will save you a lot of hair pulling.3. Pairing of the button with the receiver directions seems to imply that one button is paired with one receiver. So you might follow the path of paring the front door button with one receiver and chime selection and the back door button with another receiver and a different chime tone.4.) BUT , it is possible and really the correct way is to spread out the receivers around the house in low volume setting and then you can pair MULTIPLE buttons with the same receivers. For example front door button can be paired with ALL the receivers to play one chime tone and the back door button could be paired with ALL receivers to play a different chime tone.5. None of those options is covered in the instructions.