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Apollo NT-M12ETL METRO Underground Swing Gate Operator
The NT-M12ETL METRO Underground Opener has a reinforced foundation box and corrosion proof internal parts. The METRO is built to last!i In addition, the NT-M12ETL METRO features a 12VDC non-reversible motor and adjustable, sealed limit switches for precise gate adjustment.
The METRO Single / Dual Underground Swing Gate Opener uses the Apollo 835 / 836 advanced circuit board which features additional inputs for Free Exit Loop or Probe, Safety Loop or Edge, Under Gate Loop, Keypads, Telephone Entry System, Intercom System, 3-Button Control Station, Lock, Radio Receivers, Siren, Strobe, Firebox, Monitor Lights and Photoeyes. Additionally, the 835 / 836 circuit board have inherent safety features that comply with UL325 standards.
The NT-M12ETL METRO Underground Swing Gate Operator is 12 Volt DC powered and a 12 Volt sealed battery is recommended (not included).
| Standard Features | The 835 / 836 Circuit Board Features:
• Automatic, Adjustable Close Timer • Adjustable Auto Reverse Sensitivity • Adjustable Dual Gate Delay • Emergency Bypass • Timer to Close • Free Exit Option • Adjustable Lock Type • Coast Enable • Learn Mode • Inputs: Free Exit Loop or Probe, Safety Loop or Edge, Under Gate Loop, Keypads, Telephone Entry System, Intercom System, 3-Button Control Station, Lock, Radio Receivers, Siren, Strobe, Firebox, Monitor Lights and Photoeyes |
| Operation | 12VDC Motor |
| Power Source | 12VDC Battery, Solar or 110VAC Rechargeable |
| Battery | Solar Charge: 12V 105 AmpHr Deep Cycle : AC Charge: 12V 33 AmpHr Sealed Lead Acid (Not Included-Required) |
| Max. Gate Weight | 10 Ft. x 400 Lbs Per Gate |
| Max. Operating Speed | Opens 90° in 15 Seconds |
| Battery Backup | Inherent 12VDC Backup Power (500 Cycles With Fully Charged Battery) |
| Max. Duty Cycle | Over 80 Cycles Per Day Depending on Charger |
| Operating Temperature | 0°F to 120°F |
| Dimensions | Control Box: 18"H x 18"W x 8"D ; Operator: 14"W x 12"D x 7"H |
| Warranty | 2-Year Limited Warranty |
| Brochures | prod_brochures/apollo/NT-M12ETL-Metro.pdf |
Underground Swing Arm
This type of operator is used on many of the most upscale gates. The operator is all but invisible, located below grade, leaving the beauty of the gate unencumbered by arms and boxes. The typical installation is a bi-parting gate (2 piece). The DC motor run operators are not strong enough to operate one piece gates over 10’ in length, although there are hydraulic units available that are up to the task. This is not usually an issue because they are used almost exclusively on bi-parting gates.
All of the underground operators use a separate control box which can control 2 operators. Many times when the installation uses column, the control box is flush mounted. To make the installation simpler and increase durability we have custom skeletons available that are embedded in the footing and column that hold the operator, control unit, gate hinges, and lighting. Contact us for more information.






























