... Tanks, temperatures, water leakage;15. Transformer stations;16. Unmanned machine rooms;17. Control room application; 18. PLC and Automation, M2M ... W x H)>>Gross Weight: 1.00Kg >>10pcs per Carton.>>>>>Optional Accessories:Water Overflow Level Sensor, Oil Overflow Level ... Skype: Samchinese New Upgrading,GSM SMS Controller,RTU5011,Temperature UP DOWN remote control,24V DC Switch,NC NO sensor control