Electronics are housed in a watertight enclosure and Sensor cable is shielded and can be extended up to 500 ft. (152 m).
电子被安置在一水密外壳和传感器电缆屏蔽，可以延长到500英尺(152米)。
2
One end of the cable is permanently connected to the enclosed mercury switch and the entire assembly is encapsulated to form a completely watertight and impact resistant unit.
电缆的一端永久性连接在封闭的水银开关内，这个完整的密封总装形成完全不透水、抗撞击装置。
3
What do you do if a cable passes through a watertight bulkhead?