| 摘要 |
PURPOSE: A method of measuring solar exposure time is provided to easily check a state of sunlight by measuring exposure time of the sunlight by using a sensor. CONSTITUTION: A sensor detects sunlight. A controller processes a signal received from the sensor. The controller calculates time exposed to the sunlight. A display unit displays inputted time on a screen. A reset unit initializes processed data. The display unit can be an LED lamp. |
