The Marantec M13-631 Wireless Keypad, 315MHz, replaces the M3-631 model. This keypad can control up to four Marantec garage door openers that operate on the 315MHz frequency. It has a sleek design with a sliding cover and a smooth interface. It is weather resistant and requires a 4 digit pin code to operate. The kit includes a spacer kit for mounting on metal surfaces, a battery, mounting screws, and programming instructions. To ensure compatibility, check the 315MHz label on the back of your old keypad before ordering. The new M13-631 keypad will ship the next business day.