OFNA MICRO FAIL SAFE UNIT - #91002 (MICRO)
The OFNA Fail Safe unit is used to protect your RC car from loss of control due to:
• Weak radio signal
• Low radio batteries
• Radio interference of any kind
• Another radio on the same channel
• Low receiver car battery
• Fits most if not all U.S. RC radio’s
The Fuzzy logic CPU operates on 3.8 to 6.0 volts DC from your receiver battery pack.
Warning - If receiver battery is dead or removed or car battery switch is off, the fail safe
unit will not function nor provide any RC control protection.
Installation:
1) Connect the unit between your receiver and throttle servo. But, before applying power
check wiring color code to ensure correct polarity.
2) Locate unit in battery box or holder. It is best to keep dirt or water away from unit.
Also, secure unit so it is not loose and allowed to wiggle freely on leads.
3) To setup the unit, turn on the radio transmitter and car receiver. You should see the
throttle and steering servo’s operate normally. Also, the fail safe “red” light will be flash-
ing quickly. If solid red, you may have radio problem or not turned ON.
4) With radio transmitter on, push throttle trigger to
full brake
and hold, not full throttle.
Then, with a pin, push the Set Position button on the fail safe unit. You should feel a one
click and a flashing red light indication. For a few seconds, the red led will flash quickly
then pause, this pause indicates the fail safe is set to your brake trigger position.
The unit is now set. To check, turn off radio transmitter. Note the throttle servo will im-
mediately move to the brake position set, in this case FULL. Also, a red light will be on.
Solid Red means dangerous operation; Slow flashing red means possible problem or low
receiver battery. With either indication (Slow or Solid red), stop operation until interfer-
ence or battery recharge is done.
IF YOU HAVE ANY QUESTIONS OR PROBLEMS, CALL TECHNICAL SUPPORT.
Push To
Set
& Hold
RED STATUS
Fast Flashing: Okay
Solid: Stop, Dangerous
Slow Flashing: Low Car Battery
Fast Flashing & Pause: Set
