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™ LED Mini-Lightbars
17
Selecting a Pattern Using a Magnet Over the Hall-Effect Sensor
NOTE:
A sufficiently strong magnet is needed to change patterns. A typical retrieval tool should have
enough strength. A refrigerator magnet will most likely not have the required strength.
1.
Locate the programming sensor zone shown in Figure 4. The zone is over the Hall Effect switch
on the internal PCB.
2.
Hold a small, strong magnet within 1/8 inch above the hole so that the pattern moves to the
next pattern in the sequence. Allow the light to flash for at least one entire flash sequence before
removing the magnet.
3.
The lightbar will not change to another pattern until you remove the magnet and reapply it after
an entire pattern sequence.
4.
When the pattern you want flashes, set it in memory by allowing it to operate for 10 seconds.
Figure 4 Hole for Hall-effect sensor on PCB
290A6621
HOLE OVER HALL-EFFECT SENSOR
(PROGRAMMING SENSOR ZONE)
Cleaning the Plastic Dome
Crazing (cracking) of the dome will cause reduced effectiveness of the light system. Do not use
cleaning agents (which will cause crazing) such as strong detergents, solvents, or petroleum
products. If crazing of the dome does occur, the reliability of the light system for emergency
warning purposes may be reduced until the dome is replaced.
1.
Rinse the lenses and dome with lukewarm water to loosen dirt and debris and remove any salt water
residue.
2.
Use a mild soap, lukewarm water, and a soft cloth to gently clean the plastic surfaces. To avoid
damaging the dome, do not use heavy pressure or caustic, abrasive, or petroleum-based cleaners.
3.
Rinse and dry the plastic surfaces with a soft cloth to prevent water spotting.