import type { Service } from 'homebridge';
import type { GoveePlatform } from '../platform.js';
import type { GoveePlatformAccessoryWithControl, ExternalUpdateParams } from '../types.js';
import { GoveeDeviceBase } from './base.js';
/**
 * Purifier device handler (simple on/off control).
 * Exposes as an AirPurifier service with Eve history support.
 */
export declare class PurifierDevice extends GoveeDeviceBase {
    private _service;
    private updateTimeout;
    constructor(platform: GoveePlatform, accessory: GoveePlatformAccessoryWithControl);
    get service(): Service;
    init(): void;
    private internalStateUpdate;
    externalUpdate(params: ExternalUpdateParams): void;
}
export default PurifierDevice;