Product specifications

SB821 External Battery – AC 800M Memory Back-up Appendix A Hardware Units
392 3BSE036351-510 A
SB821 External Battery – AC 800M Memory Back-up
Description
The SB821 battery unit is used
as an external power supply to
provide extended memory back-
up for the AC 800M Controller.
The unit is DIN-rail mounted
and provided with a separate
connecting cable (TK821V020),
2 m (2.2 yd.) in length.
SB821
!
SB821 3.6V Lithium Battery Unit
Note the warning
text on the battery.
X1
B– B+ SH