Photo-Eye Sensor Alignment or Replacement: what shapes the quote

Sunlight reaching into the receiving lens can overwhelm the infrared beam from the sending sensor, so for an hour or two the opener acts as if the path is blocked. Garages that face the low sun in winter see it most. The cure is to exchange the two sensors' positions so the receiver no longer looks toward the light, or to fit a small shade over the receiving lens. Once that is done the time of day stops mattering.

An opener without a sensor circuit

Where the operator predates monitored sensors and cannot accept a pair, the quote changes shape into a modern operator with its own sensors, which is discussed as a separate decision rather than folded in.

Type of kit

Some replacement kits contain only the two sensors with connectors, while others include brackets and a full length of wire. The kit that suits the opener and the state of the existing hardware is what is quoted.

Number of doors

Each opener has its own sensor pair and wire run, so a double garage with two doors is two sets of checks, two possible pairs and two rounds of testing, quoted per door.