ZKTeco Access Control Extension Board EX0808
Auxiliary I/O expansion board with eight inputs and eight relay outputs. Documented inBio Pro/C3 Pro integration and OSDP 2.1.7 mode; optional metal enclosure.
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Overview
The ZKTeco EX0808 is an input/output expansion board for an access-control installation that needs additional auxiliary connections. Each board provides eight auxiliary inputs and eight relay outputs. It extends the connected control system's I/O resources rather than serving as a standalone card reader or biometric terminal. This makes it relevant when the project requires more monitored inputs or controlled outputs than the main panel provides.
ZKTeco documents integration with inBio Pro and C3 Pro panels using ZKBioSecurity software. A supported panel can connect up to eight EX0808 boards, giving a documented maximum of 64 additional inputs and 64 additional outputs. The actual panel model, software arrangement and required I/O count should be established together; the expansion figures are system limits, not the number of connections on one board. The manufacturer also documents an OSDP communication mode for integration with other OSDP panels, subject to the host system's supported implementation.
Communication is specified as RS485 and OSDP version 2.1.7 at 9,600 bps, with the communication address set by DIP switches. The board requires 12V DC at 300 mA and measures 160 × 106 mm, which are useful considerations when allocating enclosure space and power capacity. A metal case is an optional purchase. Plan the enclosure, wiring and connected loads as installation components, checking the relay ratings and host compatibility before assigning outputs to equipment.
Applications & Use Cases
- Additional monitored and controlled points: Add auxiliary inputs and relay outputs to a supported inBio Pro or C3 Pro installation where the panel's own I/O is insufficient. The panel and ZKBioSecurity configuration determine how each point is used.
- OSDP host integration: Use the documented OSDP mode when the receiving panel supports the required EX0808 functions and protocol implementation. A shared RS485 connection alone does not establish interoperability.
Product FAQs
Does EX0808 replace the main access controller?
No. It expands auxiliary I/O under a compatible host system. A panel, the applicable management configuration and the required readers or terminals remain separate parts of the access-control design.
How many boards are needed for 24 additional inputs and outputs?
Three boards provide 24 inputs and 24 relay outputs because each EX0808 has eight of each. This is within the documented eight-board limit for a supported inBio Pro or C3 Pro panel, but the installation must also allow for power and wiring.
Is the protective metal case included?
The manufacturer describes the metal case as a separate purchase option. Confirm the enclosure in the supplied package, including the space needed for the board, terminals and cable routing.
Can a panel with an RS485 port automatically use the board?
No. RS485 describes the communication interface, while the host must support the required protocol and I/O functions. ZKTeco names inBio Pro and C3 Pro integrations and documents an OSDP mode; other hosts need an exact compatibility check.
Can the board's power specification be used as a connected-load rating?
No. The 12V DC, 300 mA figure describes the board's own supply requirement. Connected equipment must be assessed against the applicable relay contact ratings and its own power requirements rather than treating the board consumption as an output capacity.
Specifications
| Manufacturer | ZKTeco |
|---|---|
| Model | EX0808 |
| Aux. Input | 8 |
| Aux Output Relay | 8 |
| Communication | RS485 and OSDP (version 2.1.7) |
| Baud Rate for RS-485 / OSDP | 9,600bps |
| RS485 / OSDP Address | Set by the DIP switch |
| Dimension | 160mm * 106mm (6.29in * 4.17in) (L*W) |
| Net Weight | 0.2kg (0.44lbs) |
| Consumption | 3.6W @ 12V DC 300mA |
| Power Supply | 12V DC 300mA |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
| Operating Humidity | 20% to 80% |
| Output Relay | 3Form-C Relays-SPDT 5A@ 30V DC or 10A @ 30V AC |
Downloads
Manufacturer documents and Royal Link product sheets. Check the publisher and configuration notes for each file. PDFs open in a new tab.
| Document | Type | Size | Updated / version | Action |
|---|---|---|---|---|
| PDFEX0808 - Royal Link product sheetRoyal Link Technologies LtdSupplier catalogue specifications | Product sheet | 207 KB | 2026-10-30 | Download |
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