import type { CharacteristicValue, PlatformAccessory } from 'homebridge';
import { VirtualAccessoriesPlatform } from '../platform.js';
import { AccessoryConfiguration } from '../configuration/configurationAccessory.js';
import { Accessory } from './accessory.js';
/**
 * FilterMaintenance - Accessory implementation
 */
export declare class FilterMaintenance extends Accessory {
    private readonly timerStartTimeStorageKey;
    private readonly timerDurationStorageKey;
    private readonly timerIsRunningStorageKey;
    private lifespan;
    private lifespanTimer;
    constructor(platform: VirtualAccessoriesPlatform, accessory: PlatformAccessory, accessoryConfiguration: AccessoryConfiguration);
    getFilterChangeIndicationHandler(): Promise<CharacteristicValue>;
    getFilterLifeLevelHandler(): Promise<CharacteristicValue>;
    setResetFilterIndicationHandler(value: CharacteristicValue): Promise<void>;
    protected getJsonState(): string;
    private onTimerExpiredHandler;
    static get FILTER_OK(): number;
    static get CHANGE_FILTER(): number;
    static getFilterChangeIndicationName(event: number): string;
}