... Oil and gas pipelines; 10. Corrosion protection11. Temperatures, water leakage applications;12. Wellheads, boat, vehicle;13. Energy ... 1GSM Antenna X 1Optional Accessories:Water Overflow Level Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door ... Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, Glass ...