To turn on the Capsule 3 and Mars 3 Air, here are the steps for your reference.

No charging adapter connected:
Press the power on button for 1.5s on the projector. When the adapter is not connected, the remote control cannot be used to turn on the device.

Charging adapter connected:
1. Press the power on button for 1.5s on the projector to turn on.
2. Press the power button on the remote.

If there is any issue,  please contact us for further assistance.