type SerialNumberResponse = [string | undefined, string | undefined];
type DeviceResponse = [string, undefined] | [undefined, DevicePayload];
type DevicePayload = {
    serialNumber: string;
    name: string;
    nodeId: string;
};
/**
 * @category Service
 * @internal
 * Retrieves the device serial number.
 */
export declare const getSerialNumber: () => Promise<SerialNumberResponse>;
/**
 * @category Service
 * @internal
 * Retrieves the initial device data.
 */
export declare const getDeviceDetails: () => Promise<DeviceResponse>;
export {};
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