LiftMaster LA412DC Primary 12VDC Single Actuator Arm ATTENTION BUYERS! UPON RECEIPT/DELIVERY DO NOT SIGN FOR ANY ITEM UNTIL YOU HAVE THOROUGHLY INSPECTED THE SHIPMENT FOR ANY KIND OF DAMAGES. THE SELLER IS NOT RESPONSIBLE FOR ANY DAMAGED SHIPMENT THAT HAS NOT BEEN SIGNED & REPORTED AS "DAMAGED UPON ARRIVAL. Please contact us if you have any questions or concerns. KEYED MANUAL DISCONNECT Provides simple method to manually operate gate | SYNCHRONIZED CLOSE Simultaneously closes gates FIRE DEPARTMENT COMPLIANT Selectable settings allow gate to auto open upon battery depletion PLUG-IN LOOP DETECTOR INPUTS CUSTOMERS OUTSIDE THE CONTINENTAL USA MUST CONTACT US FOR A FREIGHT QUOTE PRIOR TO MAKING A PURCHASE. CONTINENTAL USA SHIPPING PRICES DO NOT APPLY TO PUERTO RICO , ALASKA, GUAM, CANADA & INTERNATIONAL.