Applicable to Chamberlain LiftMaster 893MAX garage door opener 3-channel remote control Product description: This powerful multi door control device can operate up to 3 garage door openers and door manipulators Or enable myQ lamps. Easy to program wireless connection Visor style design with clips. Small and light. Includes battery (CR2032), instructions, and troubleshooting. Product specification: Type: remote control Compatible models: 371LM, 373LM, 971LM and 81LM, 891LM, 973LM and 893LM Frequency: 390 MHz, 315 MHz Operating range: 45 feet Material: plastic Number of buttons: 3 Compatibility list: learning button 398LM378LM377LM276LM37.4LM353LM37 2LM37 1LM370LM365LM355LM37.7LMC374LMC37 2LMC371LMC37 3W373P 940D953D956CD953CD956CD41A6318.8191139.53752139.53553139.537.54 1355135632203265327032803800350038503595 Red or orange learning button: 91L, 92L, 94L, 96L, 970L, 971L, 972L, 973L, 973W, 974L, 950CB, 953CB, 956CB, 139.53680139.536681139.536840095368000000953810001245R/1255R1265R22202245/2255226522802500257525852595 Yellow learning button: 891LM893LM953EV953GESTDmyQ950ESTD806581558165835583608365-2678500855085578587 Green learning button: 81LM82LM83LM84LM850CB853CB856CB139.53879139.538591245125512701280 Package content: 1 * Garage door opener Note: Different monitors may have slightly different colors. Please check as much as possible to ensure that the project is what you need. Please allow a difference of 0.5-1 inch due to manual measurement. (1 inch=2.54cm)