Features: AX-7S transmitter has high receiving sensitivity, super active and passive anti-jamming capabilities, very low power consumption, and stable performance. New 2 in 1 Receiver and ESC design, easy to assemble, and upgrade. Convenient to adjust the steering trim, the throttle trim, steering rate. Overheating protection, stop output when the temperature is higher than 90 degrees. Locked-rotor protection: when the motor is overloaded or jammed, 2-3s after the electrical output stops. Go into protective mode. Remote the protection status after the throttle control returns to the center. Suit For: 1/14 1/16 1/18 1/24 1/28 1/32 RC car RC boat. Specifications: Item name: RC Transmitter with 2 in 1 Receiver ESC Frequency: 2.4GHz Channels: 3 ESC: 20A Control distance: About 100m Mode type: RC car/RC boat Direction control: forward/backward/turn left/turn right RF Power: less than 20dbm CH3 Button Function: yes Powered by: 4*1.5 AA battery (Not included) Display mode: LED indicator Transmitter Size: 21*13*7.5cm Receiver size: 3.2*2.6*0.8cm Weight: 134g Suit For: 1/14 1/16 1/18 1/24 1/28 1/32 RC car RC boat Package size: 22 * 14 * 7.2cm Package weight: 244g Package List: 1*Remote Controller 1*2 in 1 Receiver and ESC 1*Instruction