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To expedite your Service Request please include your Name, Email, Phone number and an Image along with a thorough description of your issue.
Commercial Garage Door Openers
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Features and benefits of LiftMaster 8550WLB
The GT model is a heavy industrial-duty trolley door opener, as manufactured by The Chamberlain Group and is for use on standard lift sectional doors. It is rated for 25 cycles per hour constant high loading. In excess of 90 cycles/day.
The presence of primary entrapment protection is standard CPS‑U for all modes. Primary entrapment protection devices are monitored continuously to ensure safe operation of the door and limit door opener functionality should an obstruction be detected or in the event of device failure. Optional LiftMaster Monitored Entrapment Protection devices, CPS‑UN4, CPS‑RPEN4 and CPS‑EI, are designed to work in conjunction with LiftMaster commercial door openers to provide enhanced door safety and a broad range of modes and features to end users. Either monitored photo-sensor or monitored 4‑wire sensing edge (in conjunction with the CPS‑EI Edge Interface) protection may be selected, but one must be detected by the LiftMaster logic 4.0 or medium-duty logic circuit board in order to unlock full functionality.
Warning
Garage doors and garage door openers can be dangerous if not installed and verified by a professional and not used properly. Children must be supervised by an adult when they are inside or in proximity of the garage.
Features and benefits of LiftMaster MH
The MH model is a medium‑duty hoist operator, as manufactured by The Chamberlain Group. and is for use on vertical or high lift sectional doors or small rolling doors and grilles. It is rated for 12 cycles per hour during peak periods up to 50 cycles / day.
The presence of primary entrapment protection is standard CPS‑U for all modes. Primary entrapment protection devices are monitored continuously to ensure safe operation of the door and limit door opener functionality should an obstruction be detected or in the event of device failure. Optional LiftMaster Monitored Entrapment Protection devices, CPS‑UN4, CPS‑RPEN4 and CPS‑EI, are designed to work in conjunction with LiftMaster commercial door openers to provide enhanced door safety and a broad range of modes and features to end users. Either monitored photo‑sensor or monitored 4‑wire sensing edge (in conjunction with the CPS‑EI Edge Interface) protection may be selected, but one must be detected by the LiftMaster Logic 4.0 or Medium‑duty logic circuit board in order to unlock full functionality.
Warning
Garage doors and garage door openers can be dangerous if not installed and verified by a professional and not used properly. Children must be supervised by an adult when they are inside or in proximity of the garage.
Features and benefits of LiftMaster APT
The LiftMaster APT model is a low‑profile apartment house door opener, as manufactured by the Chamberlain group and is for use on standard lift sectional doors. It is rated for more than 100 cycles per day.
The presence of primary entrapment protection is standard CPS‑U for all modes. Primary entrapment protection devices are monitored continuously to ensure safe operation of the door and limit door opener functionality should an obstruction be detected or in the event of device failure. Optional LiftMaster Monitored Entrapment Protection devices, CPS‑UN4, CPS‑RPEN4 and CPS‑EI, are designed to work in conjunction with LiftMaster commercial door openers to provide enhanced door safety and a broad range of modes and features to end users. Either monitored photo‑sensor or monitored 4‑wire sensing edge (in conjunction with the CPS‑EI Edge Interface) protection may be selected, but one must be detected by the LiftMaster Logic 4.0 or medium‑duty Logic circuit board in order to unlock full functionality.
Warning
Garage doors and garage door openers can be dangerous if not installed and verified by a professional and not used properly. Children must be supervised by an adult when they are inside or in proximity of the garage.
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