ALEKO LM174P 12/24V DC Universal Touch Panel Wired Keypad Code or ID Card Access 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 ALEKOs LM107 or LM108 mounting post, sold separately, to make the keypad convenient and accessible Technical specifications: Operating current: &lt;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