I bought these 2 packs for 17.99 and I have to say it's a good price. works great with Roku Express and has no issues with it. Very easy to set up with an existing TV (requires remote) and range was good for me (16ft to Roku). The remote control is more sensitive and touch than the original remote control, not bad just a little bit different. All in all, this is a good way to add volume and power to your Roku TV if your original remote didn't have those features. There are other buttons/functions you can customize (original remotes are needed) but I can't confirm this as it only requires volume and power.
TV Tuner LUMAX DV-2120HD
15 Review
DC/DC 12V To 24V Boost Converter 40A 960W - Waterproof Voltage Regulator Module For Car Power Supply (10V-16V Input)
15 Review
Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
16 Review
Germany France Travel Power Adapter,TESSAN Schuko Plug With 2 USB Ports 2 AC Outlets, US To European Europe German French Spain Iceland Norway Russia Korea Adaptor(Type E/F)
17 Review