... a high-efficiency energy saving device which is designed mainly to meet the demands of household. Product Features: 1. Save ... efficiently 2. Environmental conservancy 3. Reduce electricity bills up to 30% 4. Easy to use, maintenance free 5. Prolong the lifespan of ... Machine, Fanner, Refrigerator, TV, Water Pump, Light etc How to use: Plug the electricity-saver box into any free power cord/socket ...