# Expansion boards

To make Ruuvi Connector System as flexible as possible, several adapter boards and standardised circuit boards will be made available.

### Standard expansion board dimensions

1. Small
2. Middle
3. Big

### External Ruuvi sensor boards

Various external Ruuvi Connector System compatible sensors are coming.

### Adapter boards

With Grove and Qwiic adapter boards you can connect almost any available sensor boards.


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