ECOVACS GOAT Cellular Module Pro Instruction Manual page 7

4. Insert the SIM card into the card tray with the metal side facing up,
as shown in the image. Then, insert the card tray into the slot.
5. Connect the module connector to the cellular module, ensuring the
connector is positioned with the "e" icon facing up. Arrange any excess
cable neatly.
6. Close the inner cover.
7. Tighten the screws on the inner cover.
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