GR-12L
Optimized Digital Proportional System
6 Channel HoTT 2.4GHz Receiver
OPERATING INSTRUCTION
Prior to use, please read this manual thoroughly.
Keep this manual in a convenient place for quick
and easy reference.
BEFORE USE
Thank you for purchasing 6CH HoTT 2.4GHz receiver. This system is extremely versatile and may be
used by beginners and pros alike. In order for you to make the best use of your system and to fly safely,
please read this manual carefully. If you have any difficulties while using your system, please consult the
manual, our online Frequently Asked Questions (on the web pages referenced below), your hobby dealer,
or the SJ Service Center.
Due to unforeseen changes in production procedures, the information contained in this manual is subject
to change without notice.
SUPPORT AND SERVICE
• Customer support
Please feel free to ask any question by e-mail or phone. We‟ve been trying to deal with your question. We
are open from nine to six, Monday to Friday in Korea. We may respond to your question by e-mail as
soon as possible when we are close.
• Internet sales site
Please feel free to contact “www.openhobbby.com” to stay up to date the latest SJ Firmware and the
newest product line up
• A/S regulation
Only when the product is faulty after normal operation within the warranty period, we will repair the
product for free based on our regulations. The repair will be paid for by the consumer when the damage
is due to use in improper ways or beyond the warranty period.
• Warranty regulation
Refer the WARRANTY CARD in a Package
OPENHOBBY A/S CENTER
202 Dong- 201, Chunui Techno-Park II, 18, 198 street, Bucheon-ro, Wonmi-Gu, Bucheon-Shi,
Gyungki-Do KOREA 420-857
Phone: 82-70-7863-3674 Fax: 82-70-7863-3670
Customer Service E-mail: Hservice@openhobby.com
INTRODUCTION
SJ GR-12L/ GR-12Li/ GR-12Lm HoTT receivers are compatible with SJ T series transmitter and used to
airplane, helicopter and glider. HoTT system gives user real-time information on various useful data such as
user model‟s RPM, voltage, temperature, user programmable warning, and so on which are directly
obtained from telemetric speed controllers equipped with this HoTT system without having to install
separate sensor devices. Of course, all of those telemetric data can be also transmitted from separate
sensor devices. The use of up to 75 hopping channels provides advanced reliable operation while keeping
from any external interference.
All instructions, warranties and other collateral documents are subject to change at the sole discretion of SJ
INCORPORATED. For up-to-date product literature, visit http://www.openhobby.com and click on the
support tab for this product
WARNING: Read the ENTIRE instruction manual to become familiar with the features of
the product before operating. Failure to operate the product correctly can result in damage
to the product, personal property and cause serious injury.
FLYING SAFETY
• Do not fly your model near spectators, parking areas or any other area that could result in injury to people
or damage of property.
• Ensure that all channels are working in the proper manner.
• Perform a ground range check prior to the initial flight of the day
• Do not fly during adverse weather conditions. Poor visibility can cause disorientation and loss of control of
your aircraft. Strong winds can cause similar problems
• We strongly recommend to set the Failsafe function and also recommend that the preset Failsafe would
be idle position
• You need to set the function of the transmitter after removing a power battery from a model or stopping a
engine of a model.
• Ensure that all your batteries have been properly charged prior to flight.
GENERAL INFORMATION
1. Products
• GR-12L : Normal Rx 6ch
2. Features
• The use of up to 75 channels ensures extreme operating reliability and immunity to external interference.
• High bright LED allows to check the operating status
• The optimized sizes and weights
• Receiver input sensitivity and thus the range have been increased further.
• Servo connections in the front panel.
• Failsafe, Hold, OFF, and standard (channel 1 failsafe; all others hold) programmable.