Review on 🔍 Atwood K9001-09 Square Reverse Switch Kit - Optimize Your Search by Loren Rindfleisch

Atwood K9001-09 is a Sigma 129P-15X switch (sigmaswitch.com). In the "kit" only the switch. I upgraded my old Fan-tastic X4000BTWH exhaust fan that didn't have reverse gear. Obtain a product sheet from sigmaswitch.com for the correct mounting hole size to cut into your existing plastic fan control bezel. I had to make two extension cable pigtails, an M/F splitter and an F/F splitter, then cut the F splitter and install it on the dome position sensor cable. Great setup and now I love that the airflow goes with the flow. The current is good to pressurize the camper to keep bugs out when the door is opened. Also adjust the inlet fan flow together with the bathroom outlet fan flow to increase the airflow in the bathroom to make the shower stall dry faster.