I believe that the Sensah RX was Sensah's very initial derailleur design. If so, it is an impressive first effort:

• It is not aimed squarely at the very low end of the market. Although it has steel parts, it also shows ambition.
• It has a novel cable routing.
• It also has a novel chunky cyborg look.
• The branding is tasteful and restrained.

When I first saw it, I liked it and immediately made a note to keep an eye out for future Sensah models.

This example is a long cage RX, suitable for any number of fine Chinese mountain bikes.

• Derailleur brands: Sensah
• Country: China
• Date of introduction: 2014?
• Date of this example: unknown
• Model no.: RD-00-8500-101-000
• Weight: 270g
• Maximum cog: 36 teeth
• Total capacity: 45 teeth
• Pulley centre to centre: 100mm
• Index compatibility: 10 speed
• Chain width: 3/32”
• Logic: top normal
• B pivot: unsprung
• P pivot: sprung
• Materials: aluminium b-knuckle and outer parallelogram plate, composite p-knuckle - the rest is steel

Ref. 1314