Material
The bill of materials of an installation, what Abriu recommends for each item, and where to install the hub.
What a site needs, per door and for the hub. The models named are the ones Abriu tested; others may work, but check with Abriu before buying.
The hub
| Item | Recommendation |
|---|---|
| Board | Raspberry Pi 4 (2 GB or more) or Raspberry Pi 5. The Raspberry Pi 3 Model B works and is in use, but is at the edge of its memory. |
| Supply | The official one for the model: 5.1 V 3 A USB-C for the Pi 4, 27 W USB-C for the Pi 5, 5.1 V 2.5 A micro-USB for the Pi 3. Generic or phone chargers cause under-voltage, which corrupts the card. The fleet tells Abriu when the hub records under-voltage. |
| Storage | A microSD card of 32 GB or more, class A2, from a known brand (SanDisk, Samsung, Kingston). An SSD over USB on a Pi 4 or 5 lasts longer and is being evaluated by Abriu. |
| Case | With ventilation (or a heat sink). The hub stays on all the time. |
| Network | A network cable to the site's router or switch. Wi-Fi only when a cable is impossible. |
| Power | A small UPS (600 VA is enough) for the hub, the router and, if possible, the terminals: without power the terminals do not open the door. |
No keyboard, mouse or monitor: the hub installs itself and is maintained from afar.
Per door
| Item | Recommendation |
|---|---|
| Face terminal | Hikvision DS-K1T642MFW (face, Mifare card, fingerprint and PIN), the validated model. Other Hikvision DS-K1T terminals with ISAPI usually work; check with Abriu. |
| Terminal supply | 12 V, per the terminal's manual, with current for the terminal and the lock. |
| Lock | A 12 V magnetic lock or electric strike, driven by the terminal's relay. Glass door: magnetic lock; gate: strike or motor driven by the relay. |
| Exit button | Wired to the terminal's button input, on the inside. Required to leave without identifying. |
| Door sensor (optional) | Magnetic, normally closed (NC), on the Hikvision terminal's door sensor input: the panel shows the door open and tells (Door sensor). |
| Network cable | To the router or switch, on the same network as the hub. |
| Bracket or junction box | To mount the terminal at the right height, protected from rain if outdoors (or an outdoor model). |
For a vehicle gate, the terminal goes on a pedestal at the driver's window height, and Abriu needs to know about it beforehand: face reading from inside a car depends on the terminal and the lighting.
Where to install the hub
- Near the router or the switch, in a closed, dry place (the front desk room, a network cabinet, a machine room without excess heat).
- Out of residents' and visitors' reach: whoever holds the card holds the site's data. The case can sit inside a locked cabinet.
- On a UPS outlet, next to the router.
- With room for air to move. The fleet follows the board's temperature and tells Abriu when it climbs too high.
What is not needed
- A computer at the site: the panel is on the internet and the hub has no screen.
- Hikvision software (iVMS-4200): the panel does everything the site needs. If the site already used iVMS, the old records can be imported through the panel (see Records already on the terminals).
- A fixed internet IP, open ports on the router or a VPN: the hub reaches the internet on its own and nothing comes in from outside (see The site's network).