Electronic Control Module (ECM) $120.00 12" - $120.00 14" - $120.00 16" - $120.00 18" - $120.00 WaterPump - $120.00 Quantity Please Choose Sensor Type. Electronic Control Module. Required for each brushless fan to operation. Choose the size/type of ECM you need 8-28vdc Ask us about our 48v ECM. Custom programming available for extra fee.