Batteries are a good choice for all devices that have low power consumption. Unfortunately, batteries can drain themselves in the long run and are costly and often time-consuming. From an ecological point of view,batteries also have a huge environmental impact and can cause longterm ecological damage. As an alternative to batteries, our electronic locks for drawer cabinets are now also available with mains power supply. With our upgrade kit, battery-operated LISTA eLocks can be easily converted to a mains power supply.