ETT 1034
BUILD-IN TOUCH TERMINAL
Page 30
19.02.2019
12 Buffer Battery
The exchangeable buffer battery ensures that the clock time (RTC) and relevant system
information are preserved in the absence of a supply voltage. A lithium battery is installed at
the manufacturer.
The lifespan of the battery is at least five years if the device was mainly in operation after the
initial start-up (supply voltage applied)
To achieve this lifespan, the ETT should not be stored longer than one year after delivery.
We recommend replacing the battery annually.
If the Buffer Battery is empty, it should be replaced by an identical Buffer
Battery.
Use only Buffer Battery from RENATA with the number:
CR2032
The SIGMATEK order number can be found below in the chapter Accesso-
ries.
If the battery voltage is located between both thresholds of the monitoring switch, the battery
can be detected as good during operation, but as low after turning off and on. In this case,
we recommend exchanging the battery.
