DNT00094 Linear light gray color Wireless MegaCode Keypad, 318MHz, Cool Gray, 1-6 Digit Pin, Backlit Keys, AAA Batteries Also known as NMTK, replaces LPWKP (MDTK). Wall-mountable backlit NMTK is a wireless MegaCode keypad that uses 3 AAA batteries for power. It can activate multiple MegaCode Receivers, including Linear GDO's and APeX equipped Gate Operators. User-selectable 1 to 6 Digit/Letter PINs. Warranty 1 year. Compatible with Linear garage door opener models: LDCO863B, LDCO841, LDCO850, LDCO852, LCDO801, LDCO800, LDO33, LDO55, LDO50, LSO50 and LCO75 Also compatible with Linear MDRU Plug-in Radio Receiver and MDR Radio Receiver, Model: NMTK P/N: DNT00094 Includes: mounting hardware (2 screws & anchors), Three (3) AAA batteries and programming instructions