Compatible with all ALEKO brand slide and swing gate openers and 12/24V DC gate or garage door openers from other brands as well. Three different access modes: works with a password, with ALEKO LM107 ID cards, sold separately, or with a password and ID cards together. Keyboard has a built in backlight for better visibility and easier operation at night. Pair with ALEKO's LM107 or LM108 mounting post, sold separately, to make the keypad convenient and accessible. Technical specifications: Operating current: 100mA; Relative humidity: 20%-80%; Registered capacity: up to 1000 cards and 1000 different access codes; Responds at a distance of up to 15 centimeters.