General sensor for Graupner HoTT receivers and models with combustion engine or electric motor.Functions: Vario with altitude signals and climb and descent signals and additional warning thresholds for min. altitude, max. altitude, climb and descent rate in two stages Altitude display (- 500 ... 3000 m) and storage of min. and max. altitude. 2x temperature and voltage measurements with warning thresholds for min. and max. voltage and min. and max. temperature Single cell measurement with warning thresholds for min. voltage Voltage, current and capacitance measurement with warning thresholds for min. and max. voltage, max. capacitance and max. current Speed measurement with speed control (programmable) and warning thresholds for min. and max. speed Fuel measurement with warning thresholds in 25% steps. Adjustable warning time: OFF, 5, 10, 15, 20, 25, 30 seconds, always Adjustable warning repetition time: Always, 1, 2, 3, 4, 5 min, once Connections: 2x temperature optionally 0 to 120°C or 200°C and voltage measurement up to 80V DC 1x speed measurement up to 100,000 rpm with two-blade propeller 1x speed controller/servo input, 1x speed control input, 1x speed controller/servo output for speed control 1x current, voltage and capacitance measurement up to 40A (pulse up to 60A) and up to 30V 1x single cell monitoring for 2 - 6S lithium batteries (LiPo, LiIo, LiFe) 1x receiver power supply input and output 1x telemetry connection for receiver 1x fuel sensor 0%/25%/50%/75%/100%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 channelsHoTT- 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