A water purifier removes impurities and harmful substances from water, making it safe for drinking and other uses. Reverse Osmosis (RO), which eliminates dissolved salts and heavy metals; and Ultraviolet (UV) purifiers, which kill harmful microorganisms. Ultrafiltration (UF) is effective against bacteria, while Distillation purifies water by boiling and condensing it. These devices improve water quality depending on the level of contamination and water type.

A vacuum cleaner is an electrical device used to remove dirt, dust, and debris from floors, carpets, and other surfaces. It works by using suction to pull in particles into a dustbin or bag. Common types include upright vacuums, canister vacuums, robot vacuums, and handheld vacuums. Some models feature additional attachments like brushes or filters to improve cleaning efficiency. Vacuum cleaners are essential for maintaining cleanliness in homes and offices, especially for those with allergies or pets.

Inverter batteries are rechargeable batteries used to store electrical energy for backup power during power outages. They work with inverters to convert stored DC power into AC power for running household appliances like fans, lights, and refrigerators. These batteries are typically lead-acid or lithium-ion types. Lead-acid batteries are more affordable and commonly used for higher capacity needs, while lithium-ion batteries are more compact, efficient, and have a longer lifespan. Inverter batteries are crucial for providing uninterrupted power, especially in areas with frequent electricity disruptions.

Solar water heaters use energy from the sun to heat water for domestic use. They consist of solar panels (collectors) that absorb sunlight and convert it into heat, which is then transferred to water in a storage tank. There are two main types: active systems, which use pumps to circulate water or heat transfer fluids, and passive systems, which rely on natural convection. Solar water heaters are energy-efficient and eco-friendly, reducing electricity bills and reliance on fossil fuels. They are ideal for areas with abundant sunlight and can provide hot water for daily needs like bathing, cleaning, and cooking.

A robot smart cleaner is an autonomous, self-operating device designed to clean floors, carpets, and other surfaces. It uses sensors, cameras, and smart navigation algorithms to map the cleaning area and detect obstacles. These devices can be programmed to clean at specific times, and many models are equipped with features like Wi-Fi connectivity for remote control via smartphones or smart home systems. Robot cleaners can efficiently vacuum or mop, making them convenient for daily cleaning with minimal human intervention. Some advanced models also include voice control integration and automatic recharging.