21English5.3 Power supplyIMPORTANT!Before starting installation, ensure that the power supply system voltage and the ratedvoltage of the camera are identical.(1) Video signal (BNC)(2) Power supply12 V DC (5.5 x 2.1 mm)The cameras have a 12 V DC power supply. Ensure correct polarity when connecting. A plug-in powersupply unit (round plug, 5.5 mm x 2.1 mm) is provided for the connection.5.4 Installing the video cableIn order to transmit the video signal to a converter, monitor, or recorder, a coaxial cable of type RG59with BNC plug (male) must be connected to the “Video OUT” connection. The cable length to the nextdevice may not exceed 150 meters. Suitable signal amplifiers can be installed to increase the range.6. Maintenance and cleaning6.1 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 ensurethat it cannot be used by mistake. Remove the batteries.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 absolutely maintenance-free for you. There are no components on theinside of the product to be checked or services by you, never open it.12