23EnglishSystem Version =software version of the monitor and cameraThis function shows you the software versions ofthe monitor and all the connected cameras.8. Maintenance and cleaning8.1 MaintenanceRegularly check the product's physical state, e.g. check for damage of the housing.If you suspect that safe operation cannot be guaranteed anymore, disconnect the product and ensure thatit cannot be used by mistake.You can assume that safe operation is not possible anymore when the device shows visible damage, the device does not function anymorePlease note:The product is maintenance free for you. Inside the product are no parts that can be checkedor repaired, so do not ever open it.8.2 CleaningWipe the product with a clean, dry cloth. If the device is very dirty, you can moisten the cloth withlukewarm water.Please also check the camera from time to time, if it is damaged or dirty. Clean the device with a clean, drycloth.Make sure that no liquids can enter the equipment as the device can be destroyed. Never usechemical detergents as they could attack the surface of the device