In summary, EC motors are capable of speed control from 10% ~ 100% of the maximum speed. EC motors are 90% efficient, resulting in a short pay-back period based on the energy and cost savings over the lifetime of the product. The electronics in the motor enable speed control, sensor control, and MODBUS integration. The EC fan is capable of operation in constant flow, temperature control, or pressure control applications. Alarm relays and tach signal outputs can also be monitored to ensure proper operation.