© Copyright Qvis® All documentation rights reserved. viiiImportant Safeguards and Warnings1.Electrical safetyAll installation and operation here should conform to your local electrical safety codes.We assume no liability or responsibility for all the fires or electrical shock caused by improperhandling or installation.2.Transportation securityHeavy stress, violent vibration or water splash are not allowed during transportation, storage andinstallation.3.InstallationKeep upwards. Handle with care.Do not apply power to the DVR before completing installation.Do not place objects on the DVR4.Qualified engineers neededAll the examination and repair work should be done by the qualified service engineers.We are not liable for any problems caused by unauthorized modifications or attempted repair.5.EnvironmentThe DVR should be installed in a cool, dry place away from direct sunlight, inflammable,explosive substances and etc.This series product shall be transported, storage and used in the environment ranging from 0℃to 55 ℃6. AccessoriesBe sure to use all the accessories recommended by manufacturer.Before installation, please open the package and check all the components are included.Contact your local retailer ASAP if something is broken in your package.7. Lithium batteryImproper battery use may result in fire, explosion, or personal injury!When replace the battery, please make sure you are using the same model!