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The GeneralAire 4690 is a replacement time control for the following ventilator models:
The GeneralAire TR3 Ventilator Timer Control is a replacement push button timer for all GeneralAire HRV and ERV model recovery ventilators. The TR3 timer allows the user change the humidity level of the HRV and ERV units, as well as override control over the DC model. This GeneralAire timer control is a 3 wire connection on the top right-hand corner of the board, and can be installed in a standard electrical box.
GeneralAire TR3 Ventilator Timer Control specifications: