ETT 731
BUILD-IN TERMINAL TOUCH
Page 14
05.12.2019
6
Buffer Battery
The exchangeable buffer battery ensures that the clock time (RTC) and SRAM data of the
ETT 731 are preserved in the absence of a supply voltage. A lithium battery is installed at
the manufacturer.
After delivery of the HZS 713-H and a storage time of one year, the lifespan of the battery
reaches 10 years, if you make sure, that the device mainly is in operation (supply voltage is
on).
To ensure operation however, we recommend that the battery be changed every 8 years.
ATTENTION: If the device is not supplied for 2 years, the battery is empty.
Battery order number: 01-690-055
MANUFACTURER
DATA
Lithium battery
RENATA
3.0 V/235 mAh
Use batteries from RENATA with the label CR2032 only!
WARNING!
Incorrect use of the batteries could result in fire or explosion! Do not recharge, dis-
assemble or throw batteries into fire!
Utilisez seulement des piles de RENATA CR2032!
ATTENTION!
La pile peut exploser si elle n’est pas manipulée correctement! Ne pas recharger,
démonter ou jeter au feu!
When the battery voltage is in between the supervisor circuit thresholds it may happen that
the battery is detected "good" during operation but "low" after a power cycle. If this happens
it is recommended to replace the battery.
