Flex EX2 Quick Reference Manual
May 2018
Page 5 of 9
General Operating Procedures
1. Reset the STOP button, located on the top left corner of the transmitter, by rotating it
clockwise or counterclockwise. The button will pop up. Turn on the transmitter power by
inserting the power switch key and rotate to the ON ( I ) position.
2. After turning on the transmitter power, check the Status LED on the transmitter for any
sign of system irregularities (refer to manual section: Transmitter Status LED Indications).
If the transmitter is in good working order the Status LED will display solid green for up to
2 seconds at power on (no faults detected).
3. Rotate the power switch key further to the START position and hold it there for up to 2
seconds (Status LED solid green). When the receiver MAIN relays are activated, the
Status LED will change from solid green to solid orange (system on). The power switch
key will retract back to the ON ( I ) position when released. The same START position
becomes an auxiliary function thereafter (refer to manual section: START + AUX
Function). Pressing any pushbutton prior to executing the START command at system
startup will result in no signals transmitted (Status LED blinks orange). During transmitter
inactivity (pushbuttons not pressed), the transmitter will automatically switch to standby
mode, with an orange blink on the Status LED at every 4-second interval. Turn off the
transmitter power when not in use to save battery power.
4. In case of an emergency, press down the STOP button to disconnect the receiver MAIN
relays (Status LED blinks 3 reds and then shuts off). To resume operation, rotate the
STOP button clockwise or counterclockwise. The button will pop up. Then execute the
START command to reconnect the receiver MAIN relays. For safety, executing the START
command is strictly required every time the transmitter is turned on or after every STOP
button reset. After 5 minutes of inactivity (pushbutton not pressed), the receiver MAIN
relays are temporarily disconnected (refer to manual section: Inactivity Timer Settings).
The Status LED blinks 3 reds and then shuts off. Execute the START command to resume
operation (refer to manual section: Start Function Settings). Turn off the transmitter power
by rotating the power switch key counterclockwise to the OFF ( 0 ) position; it will
disconnect the transmitter power and the receiver MAIN relays altogether. Rotate the
power switch key further counterclockwise to release the key.
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