User's Guide

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User Guide
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TFF-2220-00AA and TFF-2221-00AA User’s Guide D1436 Rev B
©2008 Zebra Enterprise Solutions. WhereCall IV and all product names and numbers are Zebra Enterprise Solutions trademarks. All other trademarks are the property of their respective owners.
4.2 Switch Mode
In switch mode, the display toggles between -- ON -- and -- OFF --. The normal starting state
is OFF. If the operator presses the button, then the WhereCall will send a message signaling
the change in state and the display will change to -- ON --. The resulting transmission blink
includes “Switch ID 0” which has status 2. The next button press will cause a new message
to be transmitted with “Switch ID 1” which has status 4. This signals the change of state and
the display will change back to - OFF --. In the SWITCH mode the WhereCall IV will send
multiple transmissions at increasing intervals after each button press. The first set of blinks
occurs as soon as the button is pressed, then repeats at 1 minute after the button press. The
message is then repeated at the following periods after the initial button press: 5 minutes, 10
minutes, 15 minutes, and then 30 minutes.. After completing that sequences, the WhereCall
IV then continue sending a set of blinks every 60 minutes.
The displayed -- ON -- and - OFF – messages can be replaced to show any one or a pair of 8-
character custom messages. If the message is replaced with a pair of custom messages, then
the display will not flash, but instead alternate between the pair of custom messages. When
the button is pressed, the display will alternate between the other pair of messages