# USB Relay STABLE NYMEA CONSUMER Control relays connected over USB. _Installation guide coming soon._ ## Reference **Manufacturer:** USB Relay **Plugin:** `UsbRelay` #### Supported models | Model | Role | Transport | Pairing | Quantities | | --- | --- | --- | --- | --- | | **USB Relay Connector** | gateway | — | Discovery | 1 | | **USB Relay** | power | — | Auto | 2 | #### Per-model detail ??? abstract "USB Relay Connector — `usbRelayConnector`" _Settings:_ | Key | Label | Type | Range | Default | Read-only | | --- | --- | --- | --- | --- | --- | | `path` | System path | QString | — | — | no | | `relayCount` | Relay count | uint | — | `2` | no | _Measured quantities:_ | Key | Quantity | Type | Unit | | --- | --- | --- | --- | | `connected` | Connected | bool | — | ??? abstract "USB Relay — `usbRelay`" _Settings:_ | Key | Label | Type | Range | Default | Read-only | | --- | --- | --- | --- | --- | --- | | `relayNumber` | Relay number | uint | — | `1` | no | _Measured quantities:_ | Key | Quantity | Type | Unit | | --- | --- | --- | --- | | `connected` | Connected | bool | — | | `power` | Power | bool | — |