Beamz LS-1W RGB DMX Instruction Manual page 6

Slave: switch 2 or switch 3
1.1 Set working mode. Set a laser in Master& Slave mode(MASTER：
SOUND/AUTO）, and other lasers are all set in Slave mode.
1.2 Connect the line. Use XLR-XLR line to connect the XLR output of the
master to the XLR input of the first slave, and then connect the XLR output
of the first slave to the XLR input of the second slave. Do like this until all the
slaves are connected.
1.3 Connect the power supply, and the lamp start to project laser light. And
the slave beam is synchronous with master.
1.4 When in SOUND ACTIVE mode，adjust sound control sensitivity, and
adjust the sound control sensitivity knob according to the surrounding's
sound strength. In the front panel when the blue indicator flashes to
indicate the sound activation, the system is in sound active program; when
in Auto mode, the system is in Auto-working program.