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041d7924-1 - LiftMaster Additional Garage Door Sensor (for 821LM Retrofit)

041d7924-1 - LiftMaster Additional Garage Door Sensor (for 821LM Retrofit)
041d7924-1 - LiftMaster Additional Garage Door Sensor (for 821LM Retrofit)
Item# 041D7924-1

Please Note: The LiftMaster 041d7924-1 additional door sensor has been discontinued and replaced by the 821LMB-2SENSOR model number.
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