Multi-Code 4200 Wireless Digital Keyless Entry Keypad For Multi-Code Compatible Gate Or Garage Door Opener Radio Receiver With 10 DIP On/Off Type Code Switch On 300MHz 420001 Now Manufactured by Linear Corporation MSC420001. Compatible with Multi-Elmac 10 DIP code switch type garage door openers.

Digi-Code 5200 Wireless Digital Keyless Entry Keypad Digi-Code DC5200 Directly Compatible With Multi-Code 300MHz Receivers. Features Include One Master 4-Digit PIN Code And Up To Fourteen 4-Digit User PIN Codes. Can replace the Multi-Code 4200, 420001 By Linear Part Number MCS420001