USAutomatic Entrapment Expansion Module (5 Contact Edges and 4 Photo Eyes) | USA-500015 gift card Linear Door Bg Std without

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The Commercial Protector System auto-reverses the closing door if an entrapment protection device detects an obstruction

LiftMaster SL3000U Models

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USAutomatic Entrapment Expansion Module (5 Contact Edges and 4 Photo Eyes) | USA-500015 gift card Linear Door Bg Std withoutUSAutomatic Entrapment Expansion Module (5 Contact Edges and 4 Photo Eyes) USA 500015 The expansion module is designed to monitor the connection and proper operation of multiple monitored external entrapment devices. The two types of devices which can be identified and monitored are: Contact Edges that have 8. 2K or 10K resistors installed Photo Eye with Normally Closed N C contact Its design has incorporated a single common ground for power ground