How do I connect the wireless boost switch to my HRV?

1) Install the battery being careful to not bend the prongs (that go up the side of the battery and wrap to the top side, not bent down under the battery). 2) Unplug the HRV unit from the outlet and then plug it back in. This action now gives you a 10-minute window where the HRV is open to switch synchronization. 3) Simultaneously press the “1” button and the clock button on the boost switch. You will need to hold these for 10-15 seconds. During this time you will see the indicator lights on the switch blink on and off in random-seeming patterns. Once the switch is synched both indicator lights will come on green for about a second and then you can release the buttons. 4) Test the switch to ensure that the synchronization worked. 5) If you need to synch another switch, do these steps again for the second switch (and third, fourth, however many you need).