5.2.1 due to photo transistor in the circuit, the light next to the control, not make it. Need to light anymore coming out mid pipes so close-open exposure of a photo transistor in control.
5.2.1 The photo-transistor on the light. Adjacent to the circuit It is not controlled in the near term. The pipe must be completely light out again to the - off the exposure of the photo-transistor control in the distance.
5.2.1 because the photo transistor, light interception, adjacent to the control circuit in the near term. To pipe submerged light out again to make the closed - open exposure of the photo transistor controlled remotely.