Replacement rain sensor for select automatic-opening MaxxAir MaxxFan and MaxxFan Plus RV roof vent fans.
The Maxxair 10-40007K is a replacement rain sensor for select MaxxAir automatic-opening roof vent fans. When the original rain sensor is damaged, missing, or no longer responding properly, this replacement part helps restore the automatic rain-detection feature on compatible MaxxFan and MaxxFan Plus models.
On compatible automatic-opening models, the rain sensor is designed to detect moisture and trigger the vent to close, helping reduce the chance of rain entering the RV. This is a sensor-only replacement part and does not include the fan, vent lid, lift motor, circuit board, keypad, or other roof vent components.
Restores rain-sensing function on compatible automatic-opening MaxxFan models
Ideal when the fan works but the original sensor is damaged or no longer responding
Designed for select MaxxFan and MaxxFan Plus automatic-opening roof vent fans
Includes the rain sensor only; other fan and lid components are sold separately
This rain sensor is for select automatic-opening MaxxFan and MaxxFan Plus roof vent fans. It is not a universal rain sensor for all Maxxair vents, standard manual-lift fans, FanMate vent covers, or replacement lids. Always verify your complete fan model number before ordering.
Maxxair parts lists show the 10-40007K rain sensor for automatic-opening MaxxFan and MaxxFan Plus models. Replacement Part Number: • 10-40007K Common Compatible Model Ranges: • 4500K through 4900K automatic-opening models • 4700D / 4900D models • 4700G / 4900G models • 4700N / 4900N models Also Commonly Listed For: • 00-04500K • 00-04751KSX Manual-lift models without automatic rain-sensor function typically will not use this part.
In The Box: • One Maxxair 10-40007K replacement rain sensor Not Included: • Roof vent fan assembly • Vent lid or rain cover • Lift motor or operator mechanism • Control board or keypad • Fan motor or fan blade • Interior garnish or screen • FanMate vent cover hardware This is a replacement rain sensor only. Existing compatible fan components are reused unless they are being replaced separately.
Replacement Overview: 1. Confirm Model: Verify that your MaxxFan is an automatic-opening model that uses rain sensor part number 10-40007K. 2. Disconnect Power: Turn off 12V power to the roof vent fan before servicing electrical components. 3. Inspect Related Parts: Check the lid, lift motor, keypad, circuit board, and wiring if the vent is not closing properly. 4. Remove Old Sensor: Carefully detach the original rain sensor from the fan assembly. 5. Install New Sensor: Connect and position the replacement sensor as required for your compatible fan model. 6. Restore Power: Reconnect 12V power after installation is complete. 7. Test Operation: Verify normal fan operation and confirm that the rain-sensor function responds properly before leaving the vent unattended.
This replacement rain sensor is best suited for RV owners with a compatible automatic-opening MaxxFan or MaxxFan Plus roof vent where the fan still operates, but the rain-detection feature needs repair.
Before placing your order, verify your complete MaxxFan model number and confirm that your fan is an automatic-opening model that uses rain sensor part number 10-40007K. This part is a replacement rain sensor only and does not include the vent cover, lid, lift motor, control board, keypad, fan motor, or screen.