
OPERATING MANUAL ERS
www.elsys.se
3
Installation
1. Remove the back panel of the sensor with a small
screwdriver.
2. Install the batteries. The ERS requires one or two AA
batteries. The battery type is
3.6V
Lithium Battery
(ER14505). You can use one battery. For the ERS-
CO
2
and ERS-Sound we recommend two batteries to
get maximum operation time. Use battery slot A if only
one battery is used.