KR-211FH Instruction Manual
2.4GHz FHSS 2ch Receiver
Instruction Manual
At this time we would like to thank you for purchasing the KR-210S.This product has adopted the current 2.4GH z SS system that allows the use
of multiple channels without the need to search for an available open channel like the bands of a crystal system. This product corresponds to
the transmitters that are sold by our company, listed below. Please read this instruction manual before using this product. Also please read the
instruction manual of the transmitter being used.
Technical Specifications
D.D.S. compatible Response Mode Compatible (ULTRA / ADVANCED /
Fail safe system ,Number of Channels : 2CH ,Power source : 4.8v-7.4V
Size : 28×18.3×18.5mm Weight : 7.8g
Transmitter EX-1 KIY
RF-Module RF-903FH / RF-904FH
For RF-901S/RF-902S
Throttle servo or ESC are connected.
Steering servo is connected.
B:Battery Channel
Battery is connected.
LED Lamp
While pressing
the button
Transmitter ON
LED illuminates
(3 seconds)
Goes Out
For EX-1 KIY
●This product is manufactured for surface use radio controls. *Discontinue use for all other purposes. Discontinue use in the event of a thunder storm.
*There is danger of a lightening bolt striking the antenna of the transmitter.
●Discontinue use when consuming alcohol or medication that may hinder concentration or judgement. *Unexpected accidents are caused with a judgement mistake.
●When rain and puddles are present, please discontinue use. *There are times when water enters into the equipment and control will be lost.
●Only use the batteries specified in the instruction manual of the transmitter.
●To turn the system on, start by turning on the transmitter then the receiver. To turn off the system, turn off the receiver first, then the transmitter in this
●Please be sure to use only our products for the transmitter and servos. *Concerning the damage and the like, which is generated when combining products that are not our company's genuine products we do not owe responsibility.
●Altering the transmission module is inhibited by law and is subjected to penal code violations. Resolution remodelling of all products may result in the
cause of a short and other accidents. In addition, if this product is altered we will refuse repair service.
●Please do not use this product inside an airplane, hospital, near any automatic control equipment, medical electrical machinery and apparatus such as
fire alarms. In addition with respect to the law, if this product effects other radio equipment and electronic equipment, use must be discontinued at once.
●Please avoid storage in a place of high temperatures and high humidity because it may cause the breakdown,damage and deformation of the product.
●Please note when using with an engine model, place where exhaust and the waste oil will not come into contact with the product.
*In case of submerging in oil or water, please send it out for repair.
●This product's performance is designed for use in the shown specified usage which is based on this instruction manual and the instruction manual of the
transmitter which is used. When the instructions are not understood, please contact our service department for advise.
●After verifying the safety of use, think of all the accidents possible and please enjoy with responsibility.
Our company cannot owe responsibility from the nature of the radio control models
And the customer assumes all responsibilities that result from this product being used.
Fail-safe is when the receiver loses the radio signal of the transmitter, and the function keeps channel 2 (throttle) in an optional position. The configuration is usually full brake or neutral.
Set up Tool
Please do not cut the antenna wire. You will receive less range.
Please place antenna away from receiver battery, ESC, motor and
silicon wires and any other noise source. The antenna wire for the
receiver requires special attention.
LED will go off and light
back up and you're done. If
the LED is flashing or dim,
please try to pair it again.
After turning off the power of
the transmitter and the
receiver once, the transmitter ID will be set in the
●If you are having difficulties pairing, make
sure that you are not around a wireless LAN
or microwave.If you are please move to a dif
ferent location and try again.
●After pairing is complete, Please turn off in
the order of receiver transmitter.
●Please keep the distance 1m between transmitter and receiver when you pair/bind them.
Please be sure to set the fail-safe.
Configuration instructions
Turn on the transmitter and the receiver and verify operation.
On the transmitter, hold the throttle to the position you would like it
to be set to. While holding the position, press the setup button on
the receiver.
About Repairs
If you request a repair, please report the fault in as much detail
as possible. This will aid in knowing the problem and parts to
be used and repair time.
When you believe you need service.
Hold the setup button on the receiver until the LED light goes off
and release the button.
Antenna Tube
Fail-safe function
Installing the Antenna
●Please use plastic mounts and a plastic antenna tube.
●Please do not use a metal antenna mount because it
will create noise and problems.
●To protect the main antenna, insert the antenna into the
antenna tube.
Also please do not disconnect or cut the antenna.
This will cause loss of signal.
The pic ture to the lef t will be
displayed when in the Pairing
This displays shows the possibility or a substantially damaging accident which can cause Attention
Please keep distance to the receiver site, due to noise sources of
the battery, motor, ESC, etc. If possible.
Also keep away power condensers and shotki diodes that generate noise from the receiver antenna if possible.
Receiver is brought close to the
transmitter. While pressing the setup
button on the receiver, the receiver
power source is turned on. (When
power is turned on, the button is
Please refer to the EX-1 KIY instruction manual.
The contents of this display show a possibility of death or where a serious injury may occur
Warning or a highly substantial damaging accident may occur.
Antenna Installation Location
4: Once you've completed the pairing, turn off the power to the
receiver and transmitter and verify connection by turning the
system on again.
Select "START" and press and
hold the ENTER button.
Set Up Tool
For electric
powered models.
2: Prepare the transmitter or RF module when you are ready to pair
the KR-211FH. (If you are using an electronic speed controller in
your car, make sure you have the power connected and turned on
when pairing.
While Press Button
P l e a s e o p e n SYS T E M M e n u .
And Open ‘2.4GBand’ .
For your safety, please note the handling and use of this product.
1: Pairing mode for the transmitter or RF module. The models differ
for each. Please refer to the manual of each model and the figure
to the left.
3: Hold the setup button on the KR-211FH and turn on the power.
Once the LED is lit, release the button and the LED will go off and
back on. Pair is complete.
While pressing the setup button,
t r ansmit te r O N .(C o nt inue to
press the button)
Preparation Completed when
L E D s e m i - i l l u m i n a t e d .(d a r k
Set Up Button
When using the receiver for the first time, the receiver must store the
ID number of the module and 'pairing' of the receiver and module is
necessary. Pairing must be performed when the module or transmitter that is used is changed. When multiple receivers are used, each
receiver must go through the pairing process at least once.
R e l e a s e B u t t o n ,W h e n L E D
goes out.
Name of Parts
Receiver LED illuminated again.
Please refer to your manual once more and please inspect.
When you do not understand something, please inquire our
service department.
When inquiring to our service department about a breakdown,
please include as much detail as possible of the contents
mentioned below about your problem.
Name of products (battery, car, transmitter & motor) used.
When breaking down, usage condition and description of breakdown
Your address, name and telephone number.
When a repair is being requested, please be sure to send the
memo which includes the above mentioned contents in as
much detail as possible.
Fail-Safe setting is complete.
If you change the position of the fail-safe
operation, please set again.
We recommend to set it again even if you
modify the car engine brake linkage.
Web Site
4-17-7 Higashi-Nippori,Arakawa-ku,
Tokyo Japan 116-0014
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