Flex 4Base® CE Instruction ManualJanuary 2017Page 37 of 417.2 A/B Pushbutton Select OperationPressing the “A/B” pushbutton repeatedly toggles between output relay A, Band A+B respectively. There are four different types of Select A/Bsequences available (refer to Section 4.1.8.2).Standard – Output relay A activated at A position, output relay B activated atB position, and both output relays activated at A+B position.Reversed logic - Output relay A activated at B position, output relay Bactivated at A position, and both output relays deactivatedat A+B position. Refer to Section 4.2.4: Jumper SettingsError! Reference source not found..7.3 Pitch & Catch OperationPress the “PITCH” pushbutton for up to 2 seconds to release control of thereceiver. Press the START button for up to 1 second to gain control of thereceiver. The second operator is unable to take control of the receiverunless the first operator presses the “PITCH” pushbutton. Refer to Section4.2.2.9 and Section 4.2.3.2 on how to set to this function.7.4 Changing BatteriesChange the transmitter batteries (“AA” alkaline battery x 2) by unscrewing the battery cover locatedon the backside of the transmitter. During battery installation make sure the batteries are installedcorrectly, with “+” to “+” charge and “–” to “–” charge. Also, make sure the screw is tightened afterbattery installation to avoid water, moisture, dirt, grease, and other liquid penetration.