Geovision GV-AS2120 IP Access Control Panel - PoE+ Support

In this review of the Geovision GV-AS2120, the bottom line is simple: it is a compact, rack-friendly IP access control panel aimed at small to medium sites that need flexible reader and input/output options. The reviewer found the GV-AS2120 most compelling for projects that require multiple connection types and built-in I/O because it supports Wiegand readers, RS-485 GV-Readers and fingerprint devices, and offers eight built-in digital inputs and eight relay outputs. For integrators who want PoE+ convenience or a DC 12V backup, this unit presents a practical, well-specified control point.

Key Features

• Multi-door control: Supports one-way control of four doors and two-way control up to four doors using Wiegand, RS-485 and network for flexible deployment.
• Reader compatibility: Accepts four Wiegand card readers from 26 to 64 bits and up to eight GV-Readers or GV-GF fingerprint readers via RS-485 for diverse credential options.
• Built-in I/O: Includes eight digital inputs and eight relay outputs, which lets installers directly monitor door sensors and drive locks, gates or elevator call buttons without extra modules.
• Power options: Runs on DC 12V, 3A or PoE+ (IEEE 802.3at), allowing network-powered installations or conventional 12V supply for redundancy.
• Tamper support: Provides support for a tampering alarm, helping maintain physical security of the controller cabinet.
• Compact footprint: At roughly 8.27 in by 8.03 in by 1.83 in the unit fits in shallow enclosures or equipment racks where space is limited.

Who It's For

The GV-AS2120 is best suited for security integrators and IT teams installing access control at small offices, multi-tenant buildings, parking gate entries or elevator control systems where a modest number of doors and multiple credential types are needed. Its support for both PoE+ and DC power makes it convenient for sites that prefer centralized power over network switches or want a simple 12V supply.

It is less appropriate for very large enterprise deployments that require dozens of doors per controller or for users who need a wireless-only solution; those installations will want controllers designed for higher channel counts or native wireless lock integrations.

Pros & Cons

Pros

• Flexible reader support with Wiegand, RS-485 and network-connected fingerprint devices simplifies integration with existing credentials.
• Eight built-in inputs and eight relay outputs reduce the need for extra I/O expansion modules.
• PoE+ compatibility enables streamlined installations where powered network switches are preferred.

Cons

• PoE+ power limits practical door support to two doors when relying solely on PoE+ power, which may require separate power in some setups.

Specifications

Our Verdict

The Geovision GV-AS2120 is a sensible, value-oriented IP access control panel for small to medium sites that need mixed reader support and generous on-board I/O. Installers will appreciate the PoE+ option and RS-485 fingerprint support, while the eight inputs and outputs minimize extra hardware. Choose this unit when physical space is limited and you need a capable controller without enterprise-scale door counts.

Frequently Asked Questions

Does the GV-AS2120 support fingerprint readers?
Yes, it supports up to eight GV-Readers and GV-GF fingerprint readers via RS-485 and network connections.

Can the unit run on PoE+ alone?
Yes, it supports PoE+ (IEEE 802.3at) but PoE+ power limits practical support to two doors when relying solely on PoE.

How many Wiegand readers are supported?
The controller accepts four Wiegand card readers with card formats from 26 to 64 bits.