The LR Series Signal Towers feature a modular, “Twist and Lock” system for field configuring the LED and sound module units. Module units MUST be removed one at a time from the signal tower, from top to bottom, or the internal hardware can become damaged.
[ Step 1 ] Remove the headcover to setup the body unit
[ Step 2 ] Attach one LED unit at a time to the body unit
[ Step 3 ] Replace the headcover, or attach the buzzer unit