This is the Futaba Micro Fail Safe Unit.
*** THIS IS NOT INTENDED FOR AIRPLANES OR HELIS, THIS IS FOR CARS, TRUCKS, OR
BOATS DUE TO THE LOW CUT OFF POINT. ******
FEATURES: Prevents runaway R/C vehicles by automatically returning throttle
servo to preprogrammed setting in the event of interference or low
battery voltage
Works with any scale R/C car or truck 4.8V (4-cell) or 6V (5-cell)
NiCd receiver batteries, see COMMENTS
One button programming and status LED
INCLUDES: One Futaba Micro Fail Safe Unit
REQUIRES: Connecting between receiver and throttle servo
SPECS: Length: .85" (21.5mm)
Width: .6" (15.5mm)
Height: .3" (7.5mm)
Weight: .18oz (5g)
COMMENTS: For use with NiCd batteries only, no alkalines or Manganese dry
cells.
The Discharge curve of alkalines and NiMH cells is different from
that of the NiCd cells for which this unit was designed. Non-NiCd
cells will not provide the warning at the appropriate time.
Does not work with transmitter in PCM mode
Works with the 2.4 GHz in PPM mode.