LiftMaster LA412PKGUL and LA412DCS 12VDC Solar Dual Gate System Details
The LiftMaster LA412UL dual swing gate operator package is designed for residential vehicular entrances with two powered swing gate leaves and no conventional AC power available at the gate. This configuration combines the LA412PKGUL primary solar operator package with the LA412DCS secondary 12VDC linear actuator for the second gate leaf.
The LA412 is specifically engineered as a 12VDC battery-run and solar-charge system. It should not be treated as an LA400 or LA500 with a solar panel added. Solar panel capacity, battery condition, available sunlight, daily gate cycles, accessory current draw, and entrapment protection devices all affect system performance.
What This Dual LA412 System Does
The LA412UL uses 12VDC linear actuators to automate properly constructed residential vehicular swing gates. A dual configuration uses the LA412DC primary actuator and LA412DCS secondary actuator to operate two gate leaves through the LA412 control system.
The platform provides smooth start/stop operation, inherent obstruction sensing, Security+ 2.0 radio technology, solar charging, battery-powered operation, electronic diagnostics, and compatibility with supported LiftMaster myQ and access-control equipment.
Dual Package Configuration
- LiftMaster LA412PKGUL primary solar swing gate operator package
- LA412DC primary 12VDC linear actuator
- LA412DCS secondary 12VDC linear actuator for the second gate leaf
- Standard LA412 control box
- Two 7Ah batteries commonly supplied with the standard LA412 package
- 12V 10W solar panel commonly supplied with the LA412PKGUL
- LMRRUL monitored retro-reflective photo eye commonly supplied with the current LA412UL package
- Primary actuator mounting hardware
- Secondary actuator mounting hardware
- Junction box and secondary actuator connection hardware associated with LA412DCS
- Approximately 40 ft secondary extension/direct-burial cable commonly associated with LA412DCS
Package-content warning: Dual packages may be assembled from separate LiftMaster components. Confirm the current Gate Openers Unlimited package contents before ordering if a specific solar panel, battery, cable length, junction box, bracket, photo eye, reflector, hardware kit, or accessory is required.
Compatible With
- LiftMaster LA412UL residential solar swing gate operator systems
- LA412PKGUL primary single-arm packages
- LA412DC primary actuator applications
- LA412DCS secondary actuator applications
- Dual residential vehicular swing gates within the published LA412 capacity chart
- Sites designed for 12VDC battery-run and solar-charge operation
- Compatible LiftMaster Security+ 2.0 controls
- Compatible LiftMaster myQ equipment when supported connectivity hardware and services are used
- Class I residential vehicular swing gate applications
Gate Length and Weight Capacity
The LA412UL should not be selected using the maximum gate length or maximum gate weight by itself. LiftMaster's recommended capacity decreases as gate-leaf length increases. Each leaf of a dual gate should be evaluated independently.
| Gate Leaf Length | Recommended Maximum Weight Per Leaf |
| 10 ft | 850 lb |
| 12 ft | 750 lb |
| 14 ft | 650 lb |
| 16 ft | 550 lb |
Wind loading, solid gate surfaces, hinge condition, gate balance, mounting geometry, gate posts, frequency of use, and environmental conditions can reduce the practical capacity of any linear actuator installation.
Features and Specifications
| Manufacturer | LiftMaster |
| Operator Family | LA412UL |
| Primary Package | LA412PKGUL |
| Primary Actuator | LA412DC |
| Secondary Actuator | LA412DCS |
| Application | Dual residential vehicular swing gate |
| Motor Type | 12VDC continuous-duty linear actuator motor |
| System Operating Voltage | 12VDC battery run / solar charge |
| Main AC Supply | None - solar-powered system |
| Maximum Solar Input | 12VDC, up to 30W total solar capacity |
| Standard Solar Panel | 12V 10W panel commonly supplied with LA412PKGUL |
| Standard Batteries | Two 7Ah batteries commonly supplied with standard control box |
| Solar Cycle Capacity | Varies by solar zone, panel wattage, battery capacity, accessories, gate load, and daily sunlight |
| 90-Degree Travel Time | Approximately 23-24 seconds |
| Maximum Travel Range | Approximately 115 degrees depending on mounting geometry |
| Radio Technology | Security+ 2.0 |
| Connectivity | Compatible with supported myQ equipment and services |
| Operating Temperature | Approximately -4 F to 140 F without optional heater equipment |
| Usage Classification | Class I residential vehicular swing gate |
| Operator Warranty | 2 years |
LA412PKGUL vs. LA412DC vs. LA412DCS
- LA412PKGUL: Primary single-arm 12VDC solar operator package.
- LA412DC: Primary 12VDC actuator used with the LA412 system.
- LA412DCS: Secondary 12VDC actuator kit intended for the second leaf of a dual LA412 gate.
- LA412CONTUL: Control enclosure commonly associated with the LA412UL operator platform.
A customer replacing only an actuator should verify whether the existing arm is the primary LA412DC or secondary LA412DCS before ordering.
Why Solar Sizing Matters More on a Dual Gate
A dual LA412 system operates two actuator motors from the same solar-energy budget. Daily cycle capacity depends on available sunlight, solar-panel wattage, battery condition, gate load, learned radio equipment, safety devices, loop detectors, access controls, wireless accessories, and other current-consuming devices.
A 10W solar panel may be appropriate for some installations, but it should not automatically be assumed adequate for every dual gate. LiftMaster permits additional solar capacity up to the published system limit. Use the appropriate LiftMaster solar-zone and accessory-load chart when designing the system.
Battery Options and Solar Applications
The standard LA412 control box is commonly supplied with two 7Ah batteries. LiftMaster has also offered larger solar control-box configurations designed around 33Ah batteries for installations requiring greater reserve capacity. A 33Ah setup requires the proper enclosure, battery tray, harness, and solar-system configuration and should not be substituted into the standard enclosure without confirming LiftMaster requirements.
Similar Parts That Are Not Automatically Interchangeable
Do not substitute LA400DC, LA400DCS, LA500DC, or LA500DCS actuators for LA412 components. The LA400 and LA500 families are 24VDC systems, while the LA412 is built around a 12VDC solar power architecture.
Similar-looking actuator housings do not establish compatibility. Always verify the original operator model, actuator part number, control box, system voltage, cable arrangement, solar charging system, and applicable parts diagram.
Also Known As / Related Part Numbers
- LA412UL
- LA412PKGUL
- LA412DC
- LA412DCS
- LA412CONTUL
- LA412
- LA412PKGU - earlier package designation
- LA412-PKGUL
- LA412-DCS
- SOLPNL10W12V - legacy/reference 12V 10W solar panel designation
- SP10W12V - current related 12V 10W solar panel kit
Related numbers may identify individual components, earlier package designations, or accessories. They should not automatically be treated as complete replacements for one another.
Safety and Entrapment Protection
The LA412UL is intended for vehicular gates only and is not intended for pedestrian passage gates. LiftMaster requires approved monitored external entrapment protection devices in all applicable entrapment zones.
The LMRRUL photo eye commonly included with the primary package does not automatically satisfy every safety requirement for every dual swing gate. Additional monitored photo eyes or monitored safety edges may be required based on the physical gate layout and identified entrapment zones.
Never bypass a monitored photo eye, safety edge, inherent obstruction system, emergency access device, or operator safety circuit to reduce solar power consumption or make the gate operate.
Technician Note
When diagnosing an LA412 dual system that becomes slow, intermittent, or stops operating, check the complete solar power system before replacing an actuator or control board. Weak batteries, shaded or dirty panels, poor panel orientation, excessive accessory draw, corroded connections, damaged secondary wiring, and gates that bind mechanically can create symptoms that resemble operator failure.
Both gate leaves should move freely through their complete travel by hand before the actuators are connected. A solar operator should not be expected to compensate for dragging hinges, bent gates, poor balance, incorrect bracket geometry, or excessive wind resistance.
Before Ordering Checklist
- Confirm the installation requires a dual residential swing gate operator.
- Confirm the system is the 12VDC LA412 solar platform.
- Measure the length of each gate leaf.
- Determine the approximate weight of each gate leaf.
- Compare each leaf with the LiftMaster LA412 capacity chart.
- Confirm adequate year-round sunlight at the planned solar-panel location.
- Calculate expected daily gate cycles and accessory current draw.
- Confirm whether 10W of solar charging is sufficient or additional approved panel capacity is required.
- Check battery capacity and expected reserve requirements.
- Verify LA412PKGUL plus LA412DCS are included for dual operation.
- Confirm the required secondary actuator cable length and routing.
- Identify all monitored photo eyes and safety edges required for the installation.
- Confirm package contents before ordering if particular batteries, panels, cables, brackets, or safety equipment are required.
Installation and Service Notes
The LA412UL should be installed and serviced by a trained gate systems technician. Installation requires correct mechanical geometry, actuator mounting, solar-panel placement, battery connections, low-voltage wiring, gate limits, force setup, secondary actuator wiring, monitored safety inputs, and final entrapment-protection testing.
Battery charging faults, damaged solar wiring, control-board problems, unexplained safety faults, incorrect battery configurations, or unsafe gate operation should be evaluated by a qualified gate, low-voltage, or access-control technician.
Product Questions & Answers
Is LA412PKGUL by itself a dual swing gate operator package?
No. LA412PKGUL is the primary single-arm solar package. A typical dual LA412 configuration adds the LA412DCS secondary 12VDC actuator kit for the second gate leaf.
What is the difference between LA412DC and LA412DCS?
LA412DC is the primary 12VDC actuator used with the LA412 system. LA412DCS is the secondary 12VDC actuator kit intended for the second leaf of a dual LA412 swing gate installation.
Can the LA412 operate a 16-foot gate weighing 850 pounds?
No. The maximum length and maximum weight are not simultaneous ratings. LiftMaster recommends approximately 850 lb at 10 ft, 750 lb at 12 ft, 650 lb at 14 ft, and 550 lb at 16 ft per gate leaf.
Does the LA412PKGUL include a solar panel and batteries?
LiftMaster documentation for the standard LA412PKGUL shows a 12V 10W solar panel and a standard control box with two 7Ah batteries. Because dealer-created dual packages can vary, confirm the exact package contents before ordering.
Is one 10W solar panel enough for every dual LA412 installation?
No. Required solar capacity depends on geographic solar zone, daily gate cycles, battery capacity, gate load, safety devices, access controls, loops, radio equipment, and other accessory current draw. The LA412 system supports properly configured solar capacity up to its published 30W maximum.
Can an LA400DCS or LA500DCS be used instead of an LA412DCS?
No. The LA412 is a 12VDC solar platform, while the LA400 and LA500 families use different 24VDC system architectures. Use the LA412DCS secondary actuator when the LA412 operator documentation calls for that part.
Does the included LMRRUL photo eye provide all required safety protection?
Not necessarily. The required number and location of monitored entrapment protection devices depends on the gate layout and identified entrapment zones. Additional monitored photo eyes or safety edges may be required.
What should be checked before ordering a dual LA412 solar gate operator?
Verify both gate leaves' length and weight, gate condition, actuator geometry, solar exposure, daily cycle requirements, battery capacity, accessory power draw, secondary cable requirements, monitored safety devices, and the exact contents of the dual package.
