The GR-12 is a 2.4GHz full range receiver with built-in telemetry, the Graupner GR-12 6 Channel receiver is small sized and lightweight, lending itself very well for small park flyers, lightweight hand launch sailplanes, helicopters and multirotors. The ultra-low voltage requirements of the GR-12 allows it to operate on a single-cell LiPo making ideal for DLG gliders.

The GR-12 provides real-time bi-directional data transmission of critical system health data like temperatures, receiver voltage and signal strength using the Graupner HoTT protocol providing you with telemetry information you need for a safe and secure flight. The built-in program mixers allow increased flexibility in flight precision and function.

Features:

• Up to 75 channel hopping for extreme operating reliability and immunity to external interference
• Compact and lightweight
• Front-load servo connections for easier installation in small airframes
• Digital output for SUMD, SUMDV3, SUMO, SUMI, SBUS signal providing connectivity to other vendors flight controllers and secondary satellite for other Graupner HoTT receivers
• Selectable frame rate of 10ms or 20ms for digital or analog servos
• Fail Safe and Hold function
• Low power consumption
• Wide voltage ranges from 3.6V to 8.4V
• Built-in telemetry for temperatures, receiver voltage and receiver strength monitoring
• 5 built-in program mixers

HoTT- is the synthesis of know-how, engineering and worldwide tests by professional pilots. A 2.4 GHz system that points the way for the future of RC model making.
HoTT- Hopping Telemetry Transmission is safety with up to 75 channels
HoTT- uses frequency hopping spread spectrum technology. (FHSS)
HoTT- offers integrated telemetry in real time (expandable).
HoTT- is fully programmable with the help of the Smartbox.

System Features:
- Simple and extremely fast binding
- Range test and undervoltage warning function
- Extremely wide receiver operating voltage range from 3.6 V to 8.4 V (functional up to 2.5 V)
- Failsafe, free channel mapping
- Binding of any number of receivers for channel expansion (max. 32 channels)
- Up to 4 servos can be controlled simultaneously in blocks with a servo cycle time of 10 ms (Digital servos only!)
- Maximum noise immunity due to optimized frequency hopping and wide channel spread
- Extremely fast rebinding, even at maximum distance
- Telemetry evaluation in real time
- Future-proof due to update capability via USB interface

Graupner, based in Kirchheim, Germany, was founded by the family Graupner and, up until March 2013, operated under the third Graupner generation from Stefan Graupner. In March 2013, the company was purchased by the manufacturer of Graupner HoTT RC Transmitter Systems. Graupner covers a large RC assortment including RC Cars and Trucks (GM), Helicopters, Airplanes, RC Electronics (HoTT 2,4GHZ), Chargers, RC Glow-Powered Motors (OS) as well as a large variety of Electric-Powered Brushless Motors. Graupner supplies around 2000 retailers throughout the world.