background image

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

®

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