User Manual
LMb
LECTROSONICS, INC.
6
FCCID:DBZLMBC1
Lectrosonics, Inc.
Made in U.S.A.
IC: 8024A-LMBC1
614.4 - 691.1 MHz
Model: LMBC1
S/N XXXXX
IR
5
623.400
-40
-20
0
A
IR 
PORT
-20
-10
BAT
Operating Instructions
Battery Status LED Indicators
Alkaline, lithium or rechargeable batteries can be used 
to power the transmitter. The type of batteries in use are 
selectable in a menu on the LCD.
When alkaline or lithium batteries are being used, the 
LED labeled BATT on the keypad glows green when the 
batteries are good. The color changes to red when the 
they are nearing the end of life. When the LED begins to 
blink red, there will be only a few minutes remaining.
The Power/Function LED on the top panel will mirror the 
keypad LED unless the programmable switch is set to 
the Mute or Talkback mode, and the switch is turned on.
The exact point at which the LEDs turn red will vary 
with battery brand and condition, temperature and 
power consumption. The LEDs are intended to simply 
catch your attention, not to be an exact indicator of 
remaining time.
A weak battery will sometimes cause the LEDs to glow 
green immediately after the transmitter is turned on, but 
it will soon discharge to the point where the LED will 
turn red or the unit will turn off completely.
Rechargeable batteries give little or no warning when 
they are depleted. If you wish to use these batteries in 
the transmitter, you will need to manually keep track of 
the operating time to prevent interruptions caused by 
dead batteries. Start with a fully charged battery, then 
measure the time it takes for the Power LED to go out 
completely.
NOTE: The battery timer feature in many 
Lectrosonics receivers is very helpful in measuring 
battery runtime when using rechargeable batteries. 
Refer to the receiver instructions for details on 
using the timer.
Powering On in Operating Mode
Press and hold the Power Button   for several seconds 
until a counter on the LCD progresses from 1 through 
3, followed by a display of the model, firmware version, 
frequency block and compatibility mode.
Hold
for
Rf On
...3
Block A1
V1.00
LMB
Hybrid
5
494.500
-40
-20
0
1
b 19
When you release the button, the unit will be operation-
al with the RF output turned on and the Main Window 
displayed. Only the second and third screens will ap-
pear when the programmable function switch is used to 
turn on the power.
Slide door 
outward 
to open 
battery 
door
Input Jack
Power/Function 
LED
Programmable 
Switch
Modulation 
LEDs
Belt clip mounting hole
Battery Status LED Battery icon
Power Button
Reserved for Future Use
IR Sync 
Port
Menu 
navigation 
buttons
-20
-10
BAT
Move switch 
toward the white 
dot to turn it on
RF Indicator










