12Pin Assignments:123456789 Pin 3: RS-232 RxPin 2: RS-232 TxPin 5: Ground134. Installation and OperationPlease read the Safety Instruction guide (pages 2 and 3) before installing the UPS.4.1. UnpackingInspect the UPS upon receipt. The packaging is robust, but accidents anddamage may still occur during shipment. Notify the forwarder and dealer if there isdamage.The packaging is recyclable and reusable.1. After removing the packing foam please be careful handling the UPS whileit is still in the plastic bag. The plastic is slippery, and the UPS could falland injure your feet.2. Check for the following standard package contents, in addition to the UPSitself.A. User ManualB. IEC output cables (for UPS with IEC sockets only)C. IEC input cables(for UPS with IEC sockets only)4.2. Selecting Installation PositionThe UPS is heavy. Select a location sturdy enough to support the UPSweight.To ensure proper operation and long operating life, position the UPS accordingto the following requirements.1. Keep at least 20 cm (8 inches) ofclearance beyond the rear panel of theUPS.2. Do not block the air flow to the ventilationlouvers of the unit.3. Ensure that the installation site is free fromexcessive dust and the ambient temperatureand humidity are within the specified limits.4. Do not place the UPS in a dusty or corrosiveenvironment or near any flammable objects.5. This UPS is not designed for outdoor use.