Buttons on Echo Light Sensor

Question

Where are the buttons on the Echo Light Sensor and what do they do?

There are 3 buttons on the Echo Light Sensor: 'Mode', 'Auxiliary', and 'Record Target'.

Mode: this button is located on the PCB of the sensor, and is used to record presets.
Auxiliary: this button is located on the face of the sensor with the letter 'A' on it, and is used alongside the Mode button to record presets.
Record Target: this button is located on the face of the sensor, and is used to record current lux levels as the target levels.

Echo Photo Sensor Mode Button.JPG

Echo Photo Sensor Face Buttons.png