USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com
F-710-017, V1.0
ETHSx User Manual | April 2022 | Page 20/27
Figure: Examples of brightness levels at different spots
in a typical office room (worktable EA=500 lx)
4.2.3
Initial Sensor Operation
To reach full performance the solar-powered energy storage must be recharged after a long
storage in dark (eg at initial installation). This is done automatically from the beginning of
operation in the light and the sensor will reach its full operating state after 3 to 4 days. Then
the sensor will have enough energy to work in dark the whole weekend.
4.3
Installing Supplemental Battery (optional)
If the sensor is installed where the light levels are consistently too low, battery power can be
used to supplement the solar energy harvester. Use CR1225 battery only.
1.
Pull off the cap which rests directly at the solar cell.
2.
Insert the battery with the larger positive pole (+) directed to the solar cell and slide
it between the two contact terminals (see following figure).
3.
Put the cap back on
.
NOTE
: It is strongly recommended to wear protective gloves while handling coin cell batter-
ies. Failure to do so might result in the formation of a conductive layer on the battery
surface due to skin moisture and a much shorter battery lifetime.
WARNING
: Ensure the battery is properly oriented. Improper handling of lithium
batteries may result in heat generation, explosion, or fire.
