Nope, Eco8_kid' transmitters don't tell you anything about the helicopter; they only send the signal. the LCD screen can tell you trims, times, transmitter voltage, and REALLY helps set-up, but there is no information being sent back to the transmitter. There are devices to limit rotor speed, but they aren't always neccessary unless you do 3D or have a real need for this device, called a governer.