The SOLO can be used for doors, drawers and sliding doors and is attached to the respective door or panel on the inside. Invisible from the outside, the SOLO lock is then operated with key cards, key fobs or with a smartphone. The RFID reading range and battery life depends on the technology used and the quality of the keys used. (Key cards, key fobs or RFID stickers)or type of battery. A minimum distance of 10 cm between two RFID locks must be maintained as soon as the battery is inserted.