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9
BATTERY REPLACEMENT
Battery models only
When the battery weakens, the red indicator light will blink at a constant rate. The
battery must be replaced within two weeks.
To replace the battery at battery models:
1. Carefully open the battery’s box.
2. Remove the old battery.
3. Replace the used battery with a new 9V battery (Lithium battery is
recommended).
4. Close the box.
Important:
Tubular DM was supplied with Stern’s new Self Adjusting Sensor.
The ideal sensor range for the specific location will be set automatically
again after changing the battery.
Check that there are no objects in
front of the sensor after the battery
replacement was completed.
After you have connected the power
source wait 10 seconds in order to allow
the system to set the ideal sensor range.
Then the product will be ready for use.