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What type of vent control?
2R - slave unit
- Used with a master control - movement follows the master unit.
- Used with a LST or Incremental master control - movement follows the master unit.
- Used with the Incremental control it opens in increments: closed, 1/4, 1/2 and full open.
- Used with the LST control it opens proportionally, following the master unit.
- External limit switches
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