WARNING

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.

NOTE: Because radio control devices are inherently susceptible to RF interference, this product should NOT be used as a stand-alone security device. This product is considered a monitoring and notification device ONLY, and as such, should not be used as a substitute for a dedicated home security system.

To ensure that your Garage Door Monitor continues to operate properly, the following checks should be performed on a monthly basis:

•Check that the transmitter is mounted properly on the garage door (see “Mounting the Transmitter” section of this manual.)

•Ensure the 3 volt lithium battery is installed properly.

•Check to see that the receiver system is plugged into a wall outlet and the jack is properly connected to the back of the receiver. Make sure the antenna is straight and not in contact with any metal objects.

•Check that the receiver is properly recognizing transmitter signals (see “Troubleshooting” section of this manual.)

INSTALLING THE BATTERY IN THE GARAGE 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

S

OLT

3V

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.

Garage Door Monitor

Models 915LM • 916LM • 2C507-2
Know when your garage door is open or closed!

Thank you for purchasing the LiftMaster Garage 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.

GARAGE DOOR
MONITOR SYSTEM

Transmitter

AC Adapter

CLOSED

 

 

 

OPEN

CR2032

 

 

3 VOLTS

 

 

Lithium Battery

 

Indoor Receiver

(CR2032 type)

Double-Sided Velcro

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.

Figure 1

Figure 2

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

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.

CLOSED

OPEN

Antenna Learn Button

AC

Adapter

Location

be pointing down when the garage door is closed.

Double-Sided Velcro

Round End

Down

Inside of Garage