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All rights reserved. DoorKing, Inc. 120 Glasgow AvenueInglewood, California 90301 U.S.A. Phone: 310-645-0023Fax: 310-641-1586 Use this manual with the following models only. All 9310 models with circuit board 4403-010. IMPORTANT! The 4403 circuit board used in the model 9310 IS NOT interchangeable with the 4402 circuit board used in the earlier model 9300 operators. NOTE: Models 9310-081, 9310-083, 9310-085, 9310-087, 9310-089, 9310-091, 9310-093, 9310- 095 and 9310-097 will have a supplemental