Key Benefits Secure, reliable keyless access: Enter a PIN on the wireless keypad for quick garage entry without fumbling for keys or remotes. Megacode rollingcode encryption protects against code theft and replay attacks. Energy efficient and longlasting: Lowpower chip technology minimizes battery use, reducing the need for frequent replacements. Weatherready and convenient: Waterproof housing and an illuminated keypad make the unit dependable in rain and easy to use at night. No wiring required for fast installation. Primary Features Frequency: 318 MHz Megacode wireless keypad (compatible with Linear Megacode LPWKP/MDTK 318MHZ keypad systems). Security: Rollingcode Megacode encryption for higher protection against unauthorized access. Guest access: Temporary password function allows shortterm access for visitors, contractors, or deliveries. Usability: Illuminated keys for nighttime use and a weatherproof enclosure for outdoor durability. Installation: Wireless, batterypowered design — simple mounting with no wiring needed. Compatibility (important) Compatible with Linear Megacode systems: fits LINEAR LD033, LD050, LS050, LC075, LDCO800, LSO50, and LSO502T garage door openers. Compatible receivers: Works with Linear Mega Code receivers MDR, MDRU, MDR2, MDRG, MDRM, MGR, MGR2, and SMDRG. Also fits: Craftsman CMXZDCG440 Garage Door Wireless Keypad. Note: Not compatible with dipswitch garage door openers. Typical Use Scenarios Busy household: Provide each family member with a PIN for fast driveway access without sharing remotes or keys. Shortterm access: Create a temporary code for cleaners, service technicians, or delivery personnel instead of giving out permanent access. Replacement/upgrade: Swap in this keypad to restore or upgrade keyless entry on existing Linear Megacode or listed Craftsman systems. What you get A wireless, illuminated, waterproof keypad with Megacode rollingcode security, temporary password capability, and easy, nowiring installation. Designed to work with the listed Linear and Craftsman models and Mega Code receivers.