Check the listing for details. Heddolf M220 300MHz 10 Dip Switch Remote Control Linear MultiCode 308911 300MC. Condition: New. Listed at 15.95 USD. Heddolf M220 300MHz 10 Dip Switch Remote Control Linear MultiCode 308911 300MC Heddolf M220-1KB By Keystone 1-Button Visor 10 DIP Code Switch Gate, Garage Door Opener Remote on 300MHz Replaces The Older Larger Model M220-1KA. Compatible With Multi-Code Brand Of Radio Receivers On 300MHz AKA Heddolf M220 Product Description The new compact style Heddolf M220-1KB by Keystone is also know as the M220 is a 1-button visor type 10 binary on/off code switch type gate or garage door opener remote control transmitter which is compatible with the Multi-Code and some Stanley radio receivers that use the 10 on/off type code switch remotes operating on the 300MHz frequency. This Heddolf remote control uses a crystal-controlled circuitry to give it excellent stability and superior transmission range. This item is new in box and includes the visor clip, battery and programming instructions. The Heddolf M220 remote is directly compatible with the following models on 300MHz to control one device. Challenger: MC1010, MC1020, MC4210, MC4220.Chamberlain: 300MCDigi-Code: 5010, 5030, 5040, 5060, 5070Carper: CX-390Heddolf: M219, M220Multi-Code: 3060, 3070, 3089, 4120, 4140Not all compatible models may be listed Product Features: Controls one garage door or gate opener the uses 10 code switches on the 300MHz frequencyVisor mounting clip includedTest/operate LEDOne-Year manufactures warranty Product Specifications: Power: One 12V A23 battery (included)Frequency: 300MHzCodes: 1,024 set by 10 dip code switchesDimensions: 3.0 x 1.75 x 0.5 inches (excluding visor clip)