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33502_33504_GR-4_GR-8_DE_V1sh 33502_33504_GR-4_GR-8_DE_V1sh
Technical data
GR-4 HoTT GR-8 HoTT V2
Operating voltage
3,6 … 8,4 V 3,6 … 8,4 V
Frequency 2,4 GHz 2,4 GHz
Modulation FHSS FHSS
Transmission proto-
col
HoTT HoTT V2
Control functions 2 4
Power consumption
approx. 35 mA approx. 70 mA
Temperature range
-15 ... +70 °C -15 ... +70 °C
Antenna length 1x 145 mm,
of which the last
30 mm active
1x 145 mm,
of which the last
30 mm active
Dimensions
30 x 21 x 15 mm 30 x 21 x 15 mm
Weight 6 g 6 g
accessories
GR-4 HoTT GR-8 HoTT V2
Transmitter Standard transmit-
ter
X-8E and X-8N
Servo
Standard servos S4086
S4087
S4088
ESC S3026.T S3051
S3052
ESC with WiFi S3078
S3084
S3085
S3086
Symbol description
Always observe the information indicated by these warning signs.
Particularly those which are additionally marked with the words
CAUTION or WARNING.
The signal word WARNING indicates the potential for serious injury,
the signal word CAUTION indicates possibility of lighter injuries.
The signal word Note indicates potential malfunctions.
Attention indicates potential damages to objects.
Safety notes
These safety instructions are intended not only to protect the prod-
uct, but also for your own and other people’s safety. Therefore please
read this section very carefully before using the product!
• Do not leave the packaging material lying around, this could be a
dangerous toy for children.
• Persons, including children, with reduced physical, sensory or
mental capabilities, or lack of experience or knowledge, or not
capable to use safely the receiver must not use the receiver with-
out supervision or instruction by a responsible person.
• Operation and use of radio-controlled models needs to be learnt!
If you have never driven such a model, then start extra carefully
and make sure to be familiar with the reactions of the model to
the remote control commands. Proceed responsibly.
• First, always perform a range and function test on the ground (to
do so, hold your model tight), before you use your model. Repeat
the test with running motor and with short throttle bursts.
• Only use the components and spare parts that we recommend.
Always use matching, original Graupner plug-in connections of
the same design and material.
• Make sure that all of the plug-in connections are tight. When dis-
connecting the plug-in connections, do not pull the cables.
• Protect the receiver from dust, dirt, moisture and foreign parts.
Do not expose it to vibrations or to extreme heath or cold. The
models may only be operated remotely in normal outside tem-
peratures such as from -10°C to +55°C.
• Always use all your HoTT components only with the latest firm-
ware version.
• Before you start using the remote control model, you have to
check the further relevant laws and regulations. These laws you
must obey in every case. Pay attention to the possibly different
laws of the countries.
• Due to safety and licensing reasons (CE), any reconstruction and/
or modification of the product is prohibited.
• If you have questions which cannot be answered by the operat-
ing manual, please contact us or another expert in the field.
For your safety by handling the transmitter and the receiver
WARNING
Also while programming the transmitter, make sure that a con-
nected motor cannot accidentally start. Disconnect the fuel sup-
ply or drive battery beforehand.
Avoid impacts and crushing. Check the receiver regularly for dam-
ages to the housings and cables, specially after model crashes.
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