In the production of a performance module to enhance a motor's output, any output voltage that exceeds 110 ± 0.5 volts is unacceptable to the customer. Exceeding these limits results in an estimated loss of $225. The manufacturer can, however, still repair the unit in the plant by replacing a component that costs $5. If the nominal voltage specification is 110 volts, at what tolerance should the performance module be manufactured?