Powerful Negative Ion Purification Generates high-concentration negative ions to actively neutralize and filter airborne pollutants, including compatible withmaldehyde, PM2.5, allergens, and bacteria, compatible with 24/7 clean air. Plug-and-Play Ultra-Easy Operation Simply plug into any standard wall outlet and start purifying instantly. No complicated setup, no filters to replace, and zero maintenance required. Ultra-Silent Sleep-Friendly Operation Runs at near-silent noise levels, making it perfect compatible with bedrooms, nurseries, and offices. Enjoy continuous purification without any disturbance to sleep or work. Multi-Room Whole-Home Coverage (4-Pack) The 4-unit set lets you place purifiers in every room-bedroom, living room, kitchen, office, bathroom, or car-creating a fully purified, healthy environment compatible with your entire home. Compact & Space-Saving Design Small, sleek, and wall-mounted, it takes up zero floor or counter space, blending seamlessly into any home or office decor without being obtrusive. Built-In Safety Protection System Equipped with an independent overcurrent protection system to monitor power flow in real time, ensuring safe, reliable operation 24/7 with zero fire risk. Plug Type:US Plug,EU Plug Voltage: AC220V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Color: White Material: plastic Specification: EU Plug Package Contents: 4*Air Ionizer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.