AX-7S transmitter has high receiving sensitivity, super active and passive anti-jamming capabilities, low power consumption, and stable performance. New 2 in 1 Receiver and ESC design, easy to , 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- 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. Item name: RC Transmitter with 2 in 1 Receiver ESC Frequency: 2.4GHz Channels: 3 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: 4x1.5 AA battery (Not included) Display mode: LED indicator Transmitter Size: 21x13x7.5cm Receiver size: 3.2x2.6x0.8cm Weight: 134g Suit For: 1/14 1/16 1/18 1/24 1/28 1/32 RC car RC boat Package size: 22 x 14 x 7.2cm Package weight: 244g Material:Composite material colour:Black Package Contents: 1 x Remote Controller 1 x 2 in 1 Receiver and ESC Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.