Part Number: 0077700

The RDO Sensor Fast Cap Kit has everything you need to replace your expired RDO Fast Cap for the smarTROLL RDO Handheld, the Aqua TROLL 400, and the RDO PRO-X Probes.

The RDO Fast Cap will not function on the RDO PRO. It is also incompatible with the Aqua TROLL 600 / Aqua TROLL 500, which require an Aqua TROLL RDO Fast Cap.

See the RDO Cap Explainer for details on RDO Caps.


  • 12-month Fast Cap
  • Lens cloth
  • Silicone O-ring lubricant
  • Replacement O-rings
  • Instruction sheet

Product Images