The NVD-3305 4G/2G GSM Barrier Opening Device is a practical solution for controlling arm barriers, bollards, sliding doors, turnstiles and garden gates at building entrances, residential complexes and car parks – without the need for a remote control or card reader. When a registered user calls the device, the door/barrier opens with no call charge.
Advantages
- Saves the cost of remote-control fobs and access cards.
- The door opens free of charge when a registered user calls.
- Easy management: quick configuration via mobile app, computer or SMS.
- High security: password control prevents unauthorised access.
- 100% domestic production.
Key Features
- Control of up to 3 separate doors/outputs with 3 relays
- Unlimited user definition via the mobile app
- Add/remove numbers and manage users via mobile app and web interface
- Parameter settings (trigger time, password, etc.) via mobile app and web interface
- ARM processor-based architecture
- Relays and inputs programmable via macros
- Optional Wiegand input
Functional Features
- Mobile app & SMS management: add/remove users; trigger time, password and parameter settings; SMS notification for door-open alerts.
- Macro support: relays and inputs are programmable.
- Callrec mode: automatically saves the calling number to the device.
- Log records: unlimited logging via the mobile app; the last 50 calls can be stored in device memory via SMS.
- Dual UHF antenna support: UHF antennas can be connected via the RS232 port and Wiegand.
Operating Modes
- Mode 0: When a registered number calls, the device drops the call (busy) and triggers the relay.
- Mode 1: When a registered number calls, the device answers; relays are controlled with keys 1/2/3.
- Mode 3: When a registered number calls, the device drops the call and triggers the relay; triggering is also possible from the app.
- Mode 4: When a registered number calls, the device answers; relays are controlled with keys 1/2/3 and also from the app.
Technical Specifications
| Storage Capacity | 1280 GSM numbers / Cards / UHF tags |
| Number of Relays | 3 x NO |
| Inputs | 3 |
| RS232 | Yes (cable included) |
| Antenna | 3 m – 3 dBi |
| Wiegand | Optional input |
| Network | 4G / 2G |
| Supply Voltage | 12–24V DC |
| Dimensions | 105 x 110 x 30 mm |
| Enclosure | Metal |
| Production | 100% Domestic |
Areas of Use
- Building doors and barriers
- Residential complex gates
- Hotel doors
- Remote open/close control of gates
User Manual
Application Design Guides
Short application design guides describing the device in different scenarios:
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