apollo-1500-250 (1)-free-shipping Let’s see if we can answer some questions today… Bobby in Mississippi would like to know: I need to know how to lock my Apollo 1550 gate open for a full day? Answer: The easiest way would be to enter a latch code if your keypad provides that function, if not available then your options are… cover your photo cell or open the gates and disconnect power. If you're interested in purchasing the Apollo 1550 Gate Operator, check out our Apollo 1550 product page or call us at 1-800-803-8093.