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RTC CO
2
, Temperature and Humidity Sensor Configuration Guide
Replacing the Battery
The battery is a CR2032 coin cell and is supplied with the unit. The
battery is not required for normal operation when the RCT receives
adequate natural or artificial light. The battery must be used during
installation and has enough power to run the sensor for 5 years
without light. The battery should be replaced if voltage is less than
2.7V
1. Remove back plate of the RCT by pressing a screwdriver into the
slot key on the bottom of the sensor enclosure and pull the body
away from the back plate. The top of round battery cover just
snaps completely out to allow placement of the battery.
2. To remove old battery: Using a small flat head
3. Screwdriver or pen as a lever, insert pointed end under the clear
plastic battery retaining clip’s edge and pop the clip off.
4. Install or replace the battery in the clip with a new CR2032 coin
cell battery insuring the positive side (+) will be facing up.
5. Align the two straight edges of the retaining clip with the
battery holder and press the clip in with your finger.
