Hi, I am looking to HA control a existing wireless remote that has 4 buttons. I can solder 4 outputs to the remote buttons. It is only a 3V button-cell handheld remote, so no need for a massive 4-relay unit. Any ideas or suggestions what hardware to use ? Some kind of ESP8266 maybe, but what product exactly ? Sorry, I am completely new to HA, but with a few hints I can then google my way and build a solution. Thanks a lot. Prefer to not have to use the PI onboard GPIO pins.