... controls;12. Wellheads;13. Energy saving, street lights control;14. Tanks, temperatures, water leakage;15. Transformer stations;16. Unmanned ... 1800/1900MHz Network, .>>>>>Specifications of Mainframe: >>Power adapter : DC 12V/1.5A>>Power consumption: 12V input, Max. 50mA/ ... 95% (condensation free)>>Output drive voltage: Equal to input DC voltage>>Output drive power : Drive voltage ≤35V, drive current ...