Features:
1. Support Chinese and English menus, four-channel programmable mixed control, includes rudder, throttle, potentiometer and switch, every two channels can be mixed programmed.
2. High-level STM32F103RB chip for transmitter and 32-bit industrial-grade M0 chip for receiver ensure superior anti-sparks interference ability, 12ms only from transmitter to the receiver, thus provide control synchronous and perfect performance.
3. TI CC2500 communication chip and FHSS hopping frequency technology offer stronger anti-interference ability and stable distance of 400 meters.
4. With gyroscope chip for receiver to lock direction without deviation, and to stabilize the crawler without slipping, to turn a corner more smoothly, preventing drift due to  moving too fast.
5. Fail-safe can be setup from CH1 to CH4 and fail safe parameters can be setup as you need.
6. Universal JST anti-polarity connect battery connector supports multiple batteries, includes 4pcs AA batteries or 2S-4S Lipo battery.
7. Dynamic curve display for servo index allows the user to see the settings easily.
8. Up to 11 kinds of self-setting curve parameters include unilateral servo and servo curve, brake setting, acceleration, etc.
9. Unique USB upgrade mode: support USB online upgrade, helping the transmitter always keep the most advanced system and program.
10. With the same FHSS spread spectrum of AT9S and 16 channels pseudo random frequency sequence hopping makes the transmitter have superior anti-interference ability both at the same frequency band and different frequency bands. Control distance is up to 400 meters.

Specification:
Material: Plastic
Transmitter Size: 213 * 117 * 115.5mm / 8.4 * 4.6 * 4.5inch
Receiver Size: 35 * 20 * 13mm / 1.4 * 0.8 * 0.5inch
Channel: 4CH
Compatible With: Suitable for RC Cars, Boats
Modulation Mode: GFSK
Frequency: 2.4GHZ ISM Band (2400MHz-2483.5MHz)
Spread spectrum: FHSS 16 channels pseudo random frequency sequence hopping
Antenna length: 106mm / 4.2inch
Control Distance: more than 400m / 1312.3ft
LCD screen: 128 * 64 resolution, LCD back light
Transmitter operating voltage; 4.8-15.0V DC (4 * 1.5AA )or 2S-4S Lithium battery
Transmitter operating current: 80-120mA
Receiver operating voltage: 3.3-10V
Receiver operating current: 30mA
RF Power:
Low voltage alert: 4.6V (can be set when using 2S-4S Lipo battery)
Channel resolution: 4096, the regular jitter is 0.5us

Package Include: 
1 x Transmitter
1 x Receiver
1 x Manual