Motor assembly replacement for Genie belt drive and chain drive 24V model garage door openers listed below. 

• Motor Assembly includes: Motor, Optical Encoder with wheel and cover (RPM Sensor), the wiring harness, installation screws, and instruction sheet 
• Genuine Genie replacement part 
• Compatible with models: 1028B, 2028B, 2028HB, 1128, 2128, 2128H, 1128B, 2128B, 2128HB
• Replaces old part number 40966R.S