Since many hydraulic control panels are used on active (often outdoor) job sites, these control boxes often have to be built a little tougher than others. You might need an enclosure that’s weatherproof, corrosion-resistant, impact-resistant or all of the above. Sensor lights for troubleshooting are also especially useful in hydraulic control boxes, helping users to pinpoint a system error in these often-complex networks of valves, cylinders and hoses.