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Safety Requirements Please read this manual carefully before using the module. Module may be set up and maintained by qualified personnel having the knowledge of GSM equipment operation and safety requirements. Module must be disconnected from external power supply source before starting the set up! Module should be set up in locations with restricted access and in safe distance from any sensitive electronic equipment. Module is not resistant to vibration and other mechanical effects, dampness or hazardous chemical environment. Casings, transformers, batteries and programming devices must comply with LST EN60950 safety requirements. The module is powered either by 16-­‐24 V DC source or via 16-­‐18 V II class voltage transformer from 220 V 50 Hz AC power grid. 12 V/7 Ah (or higher capacity) battery must be used in order to ensure standby power supply. Current consumption depends on the load of all connected external devices. An automatic bipolar fuse must be installed to safeguard from a current overload in the electricity supply circuit. Release contacts must be ≥ 3mm apart. The fuse must be mounted in a location well known to the maintenance personnel. The device may be disconnected from the electrical grid: − by switching the automatic fuse off (from AC power grid); − by unplugging the terminals (from the battery). 3