User's Manual

9
LT-49
The LT-49 shares all the functions of RPN-99 with an added feature of “Receiver Range
Adjustment” to allow you to adjust the 433MHZ Receiver sensitivity to an appropriate level
to suit the variant application to locate the 433MHZ transmitter Device.
z Receiver Range Adjustment
In the middle of rear side of LT-49, you can see a rectangle compartment cover. Open
the cover, you will find a “UR” (variable Resistor) inside.
z Rear View (with Lid removed):
Turn the “UR” counter-clockwise will decrease the Receiver sensitivity and hence
shorten the range.
Turn the “UR” clockwise will increase the Receiver sensitivity and hence lengthen the
range.