Two solid yellow LEDs mean that everything is plugged in correctly and the imp box is ready to talk to your smartphone.
You’re good to go!
Open the imp app and follow the prompts on the screen to create an account.
Please note: that the angle of viewing the LEDs can make it look like more than one color. The red and green tint to the yellow light is a reflection of inner box components. If it appears like 3 colors at once, it is still considered yellow.
Click here to see the full LED guide.