A receiver control circuit includes a first receiver, a second receiver, a first light sensor, a second light sensor, and a determination circuit. The first light sensor detects light transmitted to the first receiver. The second light sensor detects light transmitted to the second receiver. The determination circuit compares an intensity of the light detected by the first light sensor with an intensity of the light detected by the second light sensor. The determination circuit further selectively activates the first receiver when the intensity of the light detected by the first light sensor is less than the intensity of the light detected by the second light sensor, or activates the second receiver when the intensity of the light detected by the first light sensor is greater than the intensity of the light detected by the second light sensor.