LiftMaster Gate Acess Panel (GAPLM) Frequently Asked Questions

1	Cold Climate Use Using Lithium Batteries	The use of alkaline batteries in climates that get colder than 20F is not recommended. Alkaline chemistry when cooled will slow down tremendously and will not be able to generate enough voltage and current to function any product. In such cases, use either AA Photo Lithium, which are 1.5V each, ( in this case, you can replace the C battery holder with a AA battery holder). Spray the holder contacts with graphite grease or wd40 for longest life. Or, C Lithium 3v batteries. But ONLY USE 2 for a max voltage of 6v. Place the batteries in 2 of the positions and short the other contacts to allow for current flow. Or, insert 2 C alkaline batteries in the other 2 openings. This will not harm the Lithium batteries. DO NOT USE MORE THAN 2x 3v LITHIUM BATTERIES. DAMAGE WILL OCCUR.
2	Mounting locations	Do not mount this product into stucco or masonry walls. Due to the fact that the system contains a radio transceiver, it must be mounted with consideration paid to the attributes and shortcomings of radio communications. Use the included bolts and nuts for mounting. The head of the bolt should be outside the unit. There is no worry that someone could remove the screws, as turning the screw will cause the nut inside the unit to also turn, hence there is no way to remove the bolts externally.
3	Battery life	Battery life depends on settings and use. If all elements are enabled (backlighting, built-in 315mhz remote receiver), the unit will have about 4 years of life with daily use. If the features noted above are disabled via the front keypad, battery life is about 6 years on high quality alkalines.
4	Range Using Repeaters Interference possibilities Changing system frequency to overcome noise	Line of sight is about 1000 feet. This is highly dynamic. Although the system attempts to overcome interference and multi-path using proprietary Multi-Spectral technology, it is bound by the limits of the power allocated to the system in order to allow a long and useful battery life. The fact is that in many cases, you may be required to overcome highly absorptive materials, such as stucco and steel. This issue has been addressed by designing and manufacturing this system to allow the data packets to be translated and repeated by the use of the Repeater units. Use the Repeaters when The range is long and when testing the connection is poor due to the range The range may not be very far, but the connection is poor because the home is made from stucco or other radio absorptive materials There is a noise source somewhere nearby, including A Computer 900 MHZ Video Monitors 900 MHZ wireless speakers Other 900 MHZ wireless devices a 2.4GHZ telephone which may use 900 MHZ for one of the directions (yes, some phones sold as 2.4GHZ use 900 MHZ as well!) A Cell Site for PCS (Verizon and Sprint) closer than a few hundred feet The connection is sometimes good and sometimes not as good If the system is experiencing noise, before installing repeaters, check the site with a Spectrum Analyzer for noise. If not available, you can still overcome the issue by changing the system Frequency Set... Enter PIN#, 55, then 2 or 3 (The system is shipped with the default frequency set of 1. You can change the frequency set to 2 or 3). Once you have performed this step, you much re-teach the intercoms and OTIU to the GAP again.
5	Low Battery Indication	The GAP will send a low battery warning to the interior communicating devices when the battery voltage drops below 5v (the portable or FlushMount intercoms generate a periodic double beep. The system can still operate down to as low as 4 Volts. However, the remote control feature will lose distance and ultimately stop operating before the the system does.
6	Remote Control Receiver Poor Remote Range	The GAP features a built-in 315 MHZ receiver system. This is not the same circuit as the 900 MHZ transceiver. The range of the remote is dependant on site conditions. The best range is achieved outside the car. Using the remote inside the vehicle shortens the range greatly. Due to the design of the system, when using the miniature keychain remotes, you must hold the remote button for 2-3 seconds before the system will actuate. This is normal. If the range is not enough, open the unit and bring the WIRE ANTENNA (black 24ga wire) through the bottom of the unit. Keep it straight if possible for best range.
7	Unit is not loud enough Unit is too loud Microphone is not sensitive or is too sensitive	You can adjust both Microphone sensitivity as well as speaker volume. See the GAP installation manual.
8	Lost Master Password	Refer to the unit serial number inside the lid. Then call your local distributor with your purchase information. You will receive a Reset Code and will be able to erase all ID's on the system. The device will not reveal the IDs to you. The other information, including system settings and mating IDs to the intercoms will not be lost.
9	The system will not communicate Will not take a password, other than the master password. The CALL button does not work. The remote does not work	The unit is in VACATION mode. In this mode, nothing will operate. See the manual to exit Vacation mode. Battery is low, check battery voltage A Button is stuck?
10	When I enter more than a few pass codes, the 1st ones are erased	Exchange your unit for a newer rev unit.
11	Using repeaters, sound is not clear enough	Check to see if you have properly trained BOTH repeaters. See the Repeater FAQ
12	Using more than ONE GAP	See the GAP Instructions to set the second (and third, etc) GAP to PASSIVE MODE
13	Party Mode (LATCH MODE) not working correctly	You cannot have more than one GCU set to the same ID (cannot have 2 GCU's with ID1 or two GCU's with ID 2). We have experience with this one! Please check your install truck or other GCU's and assure than none are set to the same ID as the one you're attempting to address with the GAP.
14	From the GAP to OTIU the sounds are too loud, or the background sounds are too loud	Turn down the MIC sensitivity on the GAP. See the GAP Manual
15	Why is the GAP housing not metal?	The GAP contains two hidden antennas; one on the PCB and one in wire form. The antennas are located inside for better aesthetics and more security, as well as better weather hardening and the ability to insulate against possible lightning strikes. If the housing was metallic, the antennas would have to be located outside the housing. The materials used in the GAP include engineering alloy plastics and fiber reinforced materials, as well as a stainless steel front plate. The housing is designed to withstand decades of UV exposure and tremendous mechanical forces.
16	Using two GAPs to control a single GCU	To use two GAPS on each side of a gate, to open the gate from inside or outside, one of the GAPs must be set to ‘Passive Mode’, to be an accessory to the Master gate panel and the GCU must have its ID set to #2 (by switching dipswitch #1 up, inside the GCU). Anybody entering a PIN on a keypad will have to either enter the PIN and the #2 key, or have the PIN programmed to open GCU#2.