CONTENTS This remote is a very small (1/2" x 1-7/8" x 1-1/2") key-chain style remote operating at 310 MHz. It achieves its small size by using state-of-the-art components. It has been designed for use with; Linear 3 receivers. CODING Access to the remote's toggle code switch is achieved by unscrewing the back cover. Set the EIGHT-digit toggle code switch to match the code set in the receiver. Move switches using a small pointed object, such as a paper clip. Gently switch the small switches to either + or - positions. When complete screw the back cover back into position OPERATION Once the codes are set to match the transmitter codes, you may test the system. Ensure the gate or door is visible and clear before testing. Step 1- Push the Remote's button from a distance of about ten feet. If the receiver activates, the switches are properly set. Step 2- Test the transmitter from several locations to discover any "blind spots" caused by interference. BATTERY ACCESS Unscrew the back cover to reach battery compartment. Be aware of battery polarity when replacing the A23 battery. TECHNICAL SPECIFICATIONS Operating Frequency- 310 MHz Number of Buttons- 1 Battery- 1 ea. 12V A23 Number Combinations- Lots :-) Operating Temperature- -20F - 100F Overall Dimensions- 1/2" x 1-7/8" x 1-1/2" Weight- 1 oz. COMPATIBLE REMOTES Linear Delta 3 DTC or LB ladybug.