Yes, it can work with all devices that produce Wi-Fi.
RE200 supports Wi-Fi 4 (2.4 g) and Wi-Fi 5. (5 g)(●'◡'●)

This amplifier can only amplify 2.4GHz dual band signals, the Salt Fiber Box can generate 2.4GHz as well as 5GHz dual band signals. It works and is compatible with the Salt Fiber Box, but a device that can also amplify the 5GHz Dual Band is advisable, also note the relatively slow bandwidth of maximum 100mbit of the amplifier. (25mbit should be sufficient for home office, YouTube and Netflix streams per device).