User guide

operate erratically or not work at all. To x this problem:
1. Remove the battery.
2. Gently squeeze the battery clips toward each other, bending them slightly.
3. Insert the battery.
4. Replace the cover. Press the button in the center of the sensor to reset it.
When you replace the battery, replace it with a 3.6V lithium battery, not a
standard alkaline AA cell. Also make sure you replace it with the terminals facing
the correct direction. The sensor will not function with an alkaline cell or if the
battery is inserted backwards.
Sensors Are Not Automatically Discovered by the FDS‑Wi
If an installed sensor is not detected by the FDS-Wi, it is either too far away from
the FDS-Wi, or there is an obstruction in its path. To determine the source of
the problem, remove the sensor from its installed location and place it near the
FDS-Wi. If it’s then discovered by the FDS-Wi:
• It’s desired location may be too far away. Move the sensor away from the
FDS-Wi in small increments. This will help you determine the distance
threshold of the sensor.
• An obstruction is blocking the signal. Either move the sensor, or install a
repeater to relay the signal.
• If it’s a single sensor application, installing a 900MHz sensor may be more
cost-effective than a repeater.
If the sensor is still not discovered by the FDS-Wi:
• Verify the sensor’s serial number. Make sure you’re looking for the correct
sensor at that position.
• Remove the sensor’s cover and make sure the battery pull tab has been
completely removed.
• Check to see that the heartbeat LED is blinking, once every 10 seconds.
You’ll nd the red LED in the bottom right corner of the circuit board.
• If the red LED is not blinking, ensure there is not a gap between the battery
clips and the side of the battery. Remove the battery, gently squeeze the
clips in, and replace the battery.
• Check the battery’s voltage. If the battery is reading a low voltage (lower
than 3.4VDC), replace the battery with a 3.6V lithium AA battery.
“Ghost” Sensors
This issue may occur when wireless sensors are used in conjunction with an
FDS-Wi. When you installed your sensors, the automatic Sensor Discovery
feature on the FDS-Wi was enabled. Initially everything congured correctly, but
when you check the FDS-Wi several days later, it reports far more sensors than
you have installed, and some of the reported data is very old.
When you congured your system, you left the Sensor Discovery feature on the
FDS-Wi enabled. The sensors sometimes transmit messages with garbled data
packets, and the FDS-Wi has interpreted the garbled data as new sensors. The
“new” sensors have been added to the interface.
To avoid this problem, you must disable the Sensor Discovery feature in the
FDS-Wi once the initial conguration is complete and the FDS-Wi has discovered
all the sensors.
To x this issue once it’s occurred:
1. Turn OFF the Sensor discovery feature in the FDS-Wi.
2. Use the FDS-Wi interface to delete the “ghost” sensors. Click the Sensor
Summary link at the top of the page. You’ll see a list of all the sensors the
FDS-Wi is monitoring.
3. Click on the number of the sensor you wish to delete. You’ll be taken to
the conguration page for that sensor.
4. Delete the information in the Sensor Type ID eld, the Description eld,
and the Serial Number eld. Click the Submit Changes button.
5. Repeat the process for each sensor you need to delete.
6. Once the “ghost” sensors are all deleted, there may be gaps in your list of
sensors - if you needed to delete the sensors in spots 4, 7, and 9, these
sensor numbers are now blank. You can renumber the existing sensors to
ll in these gaps.
7. To renumber your sensors, return to the Sensor Summary page. Click the
number of the sensor you wish to renumber.
8. Scroll to the bottom of the page, and type the new number in the Move
sensor position to: box. Click the Submit Changes button. You’ll be
returned to the Sensor Summary page, and the sensor will appear in its
new location in the list. Repeat this process for each sensor you wish to
renumber.