5. TO MAXIMIZE THE DISTANCE
The 640C has a maximum range of 600 metres. The
range may vary depending on the way the transmitter is
held. Hold the transmitter away from your body to receive
the greatest range. For maximum signal strength, keep
the unit properly charged.
Maximum range
Typical range
* Avoid touching the antenna or the range may decrease substantially.
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Minimum range
6. THE LED INDICATOR
The LED indicator flashes every 4 seconds when the
receiver is on and ready for use. The LED indicator will
blink on both the transmitter and the receiver when the
transmitter buttons are pressed.
The LED indicator color indicates the battery life level.
Green = full charge
Amber = Medium charge
Red = Needs charge
If the unit is used while the LED indicator is red, it will
shut down automatically.
Receiver Indicator Light
When the "Constant" button on the transmitter is pushed,
the collar indicator light will glow steadily (either green,
amber, or red based on the remaining battery life), as
long as you hold the button down, for up to 12 seconds.
When the "Nick" button is pushed, the light comes on for
a fraction of a second.
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