Page 10Tx anD Rx OPTiOnS anD cOnnEcTiOnSTRanSMiTTER BaTTERY inSTaLLaTiOn1) Remove the battery cover on the back of the transmitter by pushing down firmly on the two tabs in the top of the battery coverand pulling the battery cover out.2) Install six fresh 'AA' Alkaline batteries into the battery holder, making sure that the polarity is correct. The direction that eachbattery should be installed is molded into the battery tray (+ Positive and - Negative).3) Set the bottom of the battery cover back onto the transmitter and push it firmly until it 'clicks' closed.If you prefer to use individual rechargeable Ni-Cd or Ni-MH cells, or a 2 cell Li-Po, or a 2 cell Li-Fe battery pack, pleasesee the Transmitter and Receiver Battery Options section on the next page.REcEivER cOnnEcTiOnS anD MOUnTingl We suggest Binding the transmitter and receiver, and setting the Throttle Fail Safe position, prior to mounting your receiver inyour model.l The receiver should be mounted as far away from any electrical components as possible.l Route the receiver antenna up through a plastic tube so that it is in the vertical position.l To protect the receiver from vibration and other damage, we recommend wrapping the receiver in shock absorbing foam wheninstalling it in your model.WARNING The receiver is NOT equipped with BEC circuitry. DO NOT use a receiver battery with a nominal voltage greaterthan 7.4 volts to power the receiver. When using an ESC, it should feature a BEC circuit that lowers the voltage to the receiverto between 4.8 volts and 7.4 volts.Set your model on a stand so the wheels are off the ground before turning on your radio control system or connectingyour motor for the first time.Use the diagram below to make the connections to the RX-451 4-Channel receiver.The RX-451 receiver's Nominal Input Voltage is 4.8v ~ 7.4v. This means that a 2 cell Li-Po or 2 cell Li-Fe battery can safelybe used to power the receiver without the use of a voltage regulatorWARNING If you are using a 7.4 volt receiver battery, you MUST also use 7.4 volt-rated servos. Using 6.0 volt servos with a7.4 volt receiver battery can result in damage to your servos and will not be covered under warranty.1) Install four fresh 'AA' Alkaline batteries into the battery holder, making sure that the polarity is correct. The direction that eachbattery should be installed is molded into the battery holder (+ Positive and - Negative).