Nature of Operation: The Domino GD1 Keyless Entry System is an electronic lock that can be used to activate any garage door opener. Pressing your personal code (1 - 6 digits) and the "enter key" allows you to open, stop, or close your motorized door in the same manner as your wall push button. The Domino System consists of two parts: a permanently mounted keypad outside connected by 30cm long detachable telephone type cable to a control box located inside the garage. The control box powers the keypad with 3 "AA" Duracell batteries (included), and is connected to the garage door opener via a two core low voltage connecting "bell wire" (not included) to send an impulse signal to open, close, or stop the motor. (fig. 2) 
Installation l. Outside keypad location: - the Domino keypad unit is weather resistant but it is advisable to choose a semi sheltered location away from driving rain. (see fig.1 below)
Drill a 1/2" hole from outside to into the garage. Carefully, feed the cable from keypad into the garage. Screw keypad to outside surface with 2 screws (included). Do not over tighten. 2. Inside: Snap keypad cable plug, with locking tab on bottom, into receptacle marked "KEYPAD" in Domino control box. Mount control box to wall with 2 screws (included). 3. Connection to motor: Disconnect power to garage door opener. Connect Domino control box to the push button terminals on the electric opener with low voltage bell wire. (fig. 2) screw wires into the two terminals marked "OPENER" in control box. Insert 3 "AA" batteries (included), observing polarity. Reconnect power to garage door opener. OPTIONAL: If there is a garage opener wall push-button located nearby you may connect the Domino control box to the terminals of this wall push button. How to program your personal code: Step 1. Slide switch to "on" or "program" (Switch is located on control box)
Step 2. Press ENTER... Press YOUR CODE (up to six digits)... Press ENTER again.
Step 3. Slide switch to "off’ or "operate" How to Use Keypad: Press "YOUR CODE"... Press ENTER. How to Erase old code: Simply set new code. The new code replaces old code. If old code still seems to be working: WAIT 20 seconds after you have entered your new correct code and pressed enter. Now try your old code. It will not work. There is a 20 second time period built into the keypad after the correct code has been pressed where any number (including your old code) and the ENTER button can activate the opener. This feature is useful when you need to quickly stop or reverse the door. Simply press the ENTER button. How to Check Battery Life: (normal battery life is 3-5 years) If either a) push button on control box activates door; or b) red indicator light on keypad lights up when pressing any number, then batteries do not need checking or replacing. If ( a) and (b) do not work and you know batteries are good, make sure the batteries are firmly placed in the battery holder and they are oriented (+ -) correctly. | 
