Where should the photoelectric sensor be installed according to the Wendy's prints?

The photoelectric sensor should be installed on the roof according to the design specifications outlined in Wendy's prints. This location is typically chosen to maximize the sensor's efficiency in detecting light levels and ensuring that it can perform its intended function effectively. Installing the sensor on the roof allows it to receive unobstructed light exposure and helps it respond accurately to changes in ambient lighting conditions, such as dawn, dusk, and varying weather conditions. This strategic placement is crucial for applications where light sensing is used for automated systems, such as lighting control and energy management.

When considering the alternative locations, the ground might expose the sensor to direct interference from objects or people, which could impede its performance. Interior walls do not provide a suitable vantage point for detecting external light levels, and placing the sensor near the entrance typically results in a limited scope of detection that doesn’t suit its intended purpose. Hence, installing the sensor on the roof maximizes both its efficiency and effectiveness.