A device available on Amazon can help consumers save money on their electricity bills. 99, is designed to detect appliances that consume electricity even when they are turned off. These appliances, often referred to as "vampiro" devices, can add up to significant energy costs over time.

By identifying and addressing these devices, consumers can potentially save $100 on their electricity bills. Further information on how the device works and its potential benefits can be found in La Opinión. 99 device.