Chamberlain Group Inc The 2C510 User Manual

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CLOSED
OPEN
Indoor Receiver
AC Adapter
Transmitter
CR2032
3 VOLTS
Lithium Battery 
(CR2032 type)
Double-Sided Velcro
To prevent possible SERIOUS INJURY or DEATH from a closing garage
door:
• Activate door ONLY when it can be seen clearly, is properly adjusted,
and there are no obstructions to door travel.
• ALWAYS keep garage door in sight until completely closed. NEVER
permit anyone to cross path of closing garage door.
WARNING
CAUTION
WARNING
WARNING
OPEN DOOR MONITOR SYSTEM
PRE-INSTALLATION SYSTEM TEST
1. The transmitter and receiver are pre-matched (programmed)
at the factory. Test the system by flipping the transmitter over
while it is a few feet away from the receiver. The receiver will
show a green light for closed when the transmitter is face up
in the vertical position with the round end of the case pointing
down (Figure 1). The red light will flash when the transmitter is
face down in the horizontal position (Figure 2).
2. If the green or the red receiver lights do not come on, or do
not react as described, see the Troubleshooting or Learning
section of these instructions.
Know when your garage door is open or closed !
Thank you for purchasing the Craftsman Open Door Monitor.
Monitor the status of your garage door from inside your home. No
longer will you have to run downstairs or go outside just to see if
you or your children have left the garage door open.
INSTALLING THE BATTERY IN THE OPEN DOOR
INDICATOR TRANSMITTER
1.Place the screw driver blade on the tab
at the end of the case and gently press
down and in toward the case.
2. Insert the the lithium battery into the 
battery clip with the + (positive) side
face up.
3. Push the case back together tightly by
inserting the top hooks into the back
cover, then snap shut the bottom of 
the case.
NOTE: It is normal to hear a rattle from
the tilt switch in the Transmitter when 
tilted or rotated to another position.
INDOOR RECEIVER SETUP
1. Plug the AC adapter into
any standard 110 volt AC
electrical wall outlet and the
small plug into the back of
the Indoor Receiver.
2. The Receiver has a 9
"
antenna wire which comes
out the back. The antenna
should be straight and not
touching metal.
3 V
OL
TS
CLOSED
OPEN
Antenna
Learn 
Button
AC 
Adapter
Location
Figure 1
Figure 2
Inside of Garage
Double-Sided Velcro
Round 
End
Down
MOUNTING THE TRANSMITTER
Attach the transmitter to the inside of the garage door using the
double-sided velcro. Mount the transmitter near the top of the
garage door for best results. The round end of the case should
be pointing down when the garage door is closed. 
Open Door Monitor
Model 139.53696
®