6 E-Coder)R900i Installation and Maintenance Guide
4 Activating and Reading the E-Coder)R900i
How to Activate LCD Using the Light Sensor
The light sensor is recessed under the small round hole near the center of the dial face. The
hole is marked with a flashlight graphic. See Figure 4.
Figure 4 Light Sensor for E-Coder)R900i Pit
The light sensor activates the LCD display for
several minutes when the unit is exposed to a
light source. For example, a unit mounted in
an inside location would turn on the LCD for
several minutes after the room light is turned
on. A unit mounted in an outside pit would
turn on the LCD for several minutes after the
pit lid is opened exposing the unit to daylight.
If the LCD is currently off, the LCD may be
reactivated by covering the dial plate with
your hand for about two seconds. In bright
sunlight, it may be necessary to close the
cover or the pit lid momentarily. If the LCD
does not reactivate as expected, try shining a
flashlight on the light sensor.
Figure 5 Activating E-Coder)R900i Inside
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