Mighty Mule FM137 User Manual
25 code gto digital keypad, Instructions for wired and wireless installations, Features of the keypad
Thank you for purchasing the GTO Digital Keypad. Be sure to read the directions carefully and
completely. Before permanently mounting the keypad, please program the keypad and test its
IMPORTANT: Your keypad may need to be hard wired due to the fact that it must accept
interference according to FCC regulations listed below. For example, applications
that are relativity close to cell towers or airports may receive intermittent interference and
The GTO Digital Keypad is a multipurpose keypad that can work with other applications in
addition to GTO gate openers and locks. As a wired keypad it can operate garage door openers
and gate openers, that require 24 volts or less and accept normally open contacts.
As a wireless keypad it can be used with any gate or garage door opener that receives a 318
MHz RF signal. The keypad must be used in conjunction with the GTO garage door receiver kit
(part # RB709) on any other garage door.
SAFETY NOTE: Never install the keypad where a person can reach through the gate to activate
it, or where a person can touch the gate while activating the keypad. The recommended mini-
mum distance between the gate and keypad is 10 ft.
25 Code GTO Digital Keypad
Instructions for Wired and Wireless Installations
Limited One Year Warranty
GTO, Inc. gate opener accessories are warranted by the manufacturer against defects in workmanship for a period of one (1) year from the date of
purchase, provided recommended installation procedures have been followed.
In the case of product failure due to defective material or manufacturer workmanship within the one (1) year warranty period, the accessory will be re-
paired or replaced (at the manufacturer’s option) at no charge to the customer, if returned freight prepaid to GTO, Inc., 3121 Hartsﬁeld Rd., Tallahassee,
FL 32303. IMPORTANT: Call 850/575-4144 or fax 850/575-8950 for a Return Goods Authorization (RGA) number before returning goods to factory.
Products received at the factory without an RGA will not be accepted. Replacement or repaired parts are covered by this warranty for the remainder of
the one (1) year warranty period. GTO, Inc. will pay the shipping charges for return to the owner of items repaired.
The manufacturer will not be responsible for any charges or damages incurred in the removal of the defective parts for repair, or for the reinstallation
of those parts after repair. This warranty shall be considered void if damage to the product(s) was due to improper installation or use, connection to an
improper power source, tampering, or if damage was caused by lightning, wind, ﬁre, ﬂood, insects, or other natural agent.
After the one (1) year warranty period, GTO Inc. or one of its authorized service centers will make any necessary repairs for a nominal fee. Call GTO
at 850/575-4144 for more information. This warranty gives you speciﬁc legal rights, and you may also have other rights which may vary from state
to state. This warranty is in lieu of all other warranties, expressed or implied. NOTE: Veriﬁcation of the warranty period requires copies of receipts or
other proof of purchase. Please retain those records.
Features of the Keypad
You may program up to 25 different personal entry codes, allowing you to give different entry codes to different users. For example,
you can give a delivery person their own entry code, which you can easily change after they have made the delivery. This will prevent
them from being able to regain access, while still allowing those to whom you gave other entry codes full access.
After entering a valid code, pressing any key while the gate is opening will stop the gate; pressing any key while the gate is stopped
and the gate will reverse direction. The keypad will not affect the auto-close setting of your gate opener system.
The keypad face will light up and beeper will beep at the press of any key. The keypad memory will recognize your entry code in a
string of up to 20 digits; if it ﬁnds the correct sequence it will activate the gate opener. As a security feature, the keypad will shut down
for 40 seconds if it does not ﬁnd the correct code sequence within a 20 digit string. This will discourage an unauthorized person from
trying to use random numbers to access your property.
Your entry codes will remain stored in memory even when the batteries go dead. The keypad will remember your entry codes as long
as you don’t press the RESET button.
©2005 GTO, Inc.
rev - 06-21-05
FCC WARNING: Changes or modiﬁcations to this unit not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruc-
tions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in particular installations. If this equipment does cause harmful in-
terference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures: • Reorient or replace the receiver antenna. • Increase the
separation between the equipment and the receiver. • Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help.