Nice Vanguard 3501 Swing Gate Opener | HYS-O-3501
The Vanguard 3501 articulating arm is designed for residential, farm, and ranch swing gates. It operates on 12VDC battery power, with options for AC or solar charging. Capable of opening gate leaves up to 1000 lbs and 20 feet in length within 25 seconds, it features an adjustable slowdown position for smooth operation. This model is compatible with the Mercury 310 controller.
Important Notes
- Battery and battery charger or solar panel required for operation, not included.
- If the operator is AC powered, the battery, if present, (not included or required) will be a backup for when AC power is lost.
- If the operator is solar-powered, the battery and 12V solar panel are required (not included).
- The Mercury 310 control board is equipped with an internal battery charger.
Features
- Powerful: Move gate leaf up to 1,000 lbs and 20 ft
- Low maintenance: Easy to install and maintain
- Resilient: Newly redesigned corrosion-resistant cover & long-lasting components
- Quiet: Smooth, low-friction motor ensures near-noiseless operation
- Safety: Offset pivot arm reduces the possibility of pinching
- Flexible: AC or Solar power options
- Technology: Nice BlueBUS 2-wire system self-identifies monitored photo eyes
- Design: Low profile, post mount design allows for compact installation
- Made in USA: Designed, tested, and built with global materials
Technical Specifications
- Model: Vanguard 3501 Swing
- Operator Kit: Single: CBOX310 control box, CH35-1 drive chassis, ABOX35 arm kit
- Duty Cycle: Varies based on charging capacity*
- Drive: Electromechanical
- Gate Length: Max up to 20 ft leaf (6 m)
- Gate Weight Max: up to 1,000 lb leaf (272 kg)
- Open/Close Time (to 90°): ~25 seconds
- Temperature Rating: -4º to 122º F (-20º to 50º C)
- Operating Voltage: 12VDC
- Input Voltage: 18VDC to 24VDC
- Idle Current: <10mA
- Accessory Power: 12V 500mA always on (2 locations), 12V 500mA standby off (2 locations
- Included Accessories: OXIBD bi-directional receiver, ONE2E transmitter
- Communication: BlueBUS, USB port, OXI, 433MHz remote
- User Controls: Mercury 310 board
- Relays: N/A
- Arm Dimensions: ABOX35: Primary: 36 inches total length
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Enclosure:
- CBOX: 18w x 18h x 8d inch (45.7w x 45.7h x 20.3d cm)
- Chassis: 17.8w x 12h x 8.3d inch (45.2w x 30.5h x 21d cm)
- Finish: Powder-coated steel chassis; molded polyethylene cover
- ETL Listed (UL 325): Usage Class I, II
- Warranty: 3 years with product registration
Product Literature
- Nice Vanguard 3501 Specs Sheet
- Nice Vanguard 3501 Parts Diagram
- Nice Vanguard 3501 Installation Manual
Note: The Nice O-3501 swing gate opener was originally offered under the Apollo brand, known for its dependable gate automation components. Following Apollo’s acquisition by Nice, this part is now officially part of the Nice product line. It maintains the same compatibility and performance, now supported by the global resources and innovation of Nice Group.
Find answers to our most frequently asked questions below. Got more questions? Reach out to our friendly customer service team, they will be more than happy to assist you.

