HotRC DS-4A 2.4G 4 Channel Single Hand RC Radio Transmitter with 4Ch Receiver for RC Car boat Airplane Features: HotRC DS-4A 2.4G 4-channel single-handed remote control radio transmitter with 4-channel receiver for remote control cars, boats, drones and aircraft Brand Name: Remote Control Item Name: DS-4A Transmitter Do it in a different way more interesting 1. New construction, true one-handed remote control. 2. It has a locking function (locking the trim rudder for channels 1 and 2). While pressing the power switch, press and hold the 4-way switch while pressing the power switch 3. It has a fixed speed cruise function. After fixing the speed, it is also possible to increase and decrease the speed, which can be achieved by increasing or decreasing the throttle. 4.1 Dual channel travel knob control 5. For the hybrid control function (12 channels operating simultaneously), press and hold the 3-way switch Press and hold the power switch at the same time 6. one-way and two-way modes are supported (press and hold the positive and negative channel sections while holding the power switch) (Press and hold the power switch at the same time) 7. 7. The remote control will automatically switch off after 15 minutes of inactivity 8. Failsafe (press and hold the code piece of the receiver while plugging in the power supply) 9. 9. Digital steering wheel and analogue steering wheel supported (long press on the opposite code piece to switch (on for digital, off for analogue) 10. 4 channels of the receiver support electric frequency signals and Pwm signals Specification: Applicable models:Model car/boat/tank/dual pass aircraft Number of channels:4 Frequency range:2.4GHZ ISM Modulation mode:GFSK Spread spectrum mode:FHSS Remote control distance:ground distance about 400m, air distance about 800m Channel resolution:4096 Transmitter power supply:DC 4V-9V Net weight:115g Package includes: 1*Remote control 1*Receiver 1*Lanyard 1*Manual