GC305 Bluetooth AoA Gateway
Sub‑metre precision · PoE · IP66 · ≤10m mount height
Key features
???? Angle‑of‑Arrival (AoA) Technology
Uses antenna array to compute signal direction, achieving ≤1m accuracy with compatible BLE tags.
???? Standard PoE + DC Backup
IEEE 802.3af/at PoE (class 0) or DC 12‑30V input. Power consumption <2W.
???? Daisy‑chain Cascade
Two RJ45 ports (PoE IN and PoE OUT). Connect up to 8 gateways in series, sharing power and data.
????️ Outdoor‑ready
IP66 enclosure (dust‑tight, protected against powerful water jets). Operating temperature -20°C to +60°C, humidity 0‑95%.
⚙️ Easy Commissioning
Supports Bluetooth configuration via WeChat mini‑program (iOS/Android) and OTA firmware updates.
???? Quick Mount
Ceiling bracket with quarter‑turn lock. Installation height ≤10m, tilt angle recommended <45°.
Package contents
| Item | Quantity |
|---|---|
| GC305 gateway unit | 1 |
| Mounting bracket (plate) | 1 |
| Quality certificate | 1 |
| Mounting screws + plastic anchors (KA4×30) | 4 sets |
| Waterproof connector kit | 2 |
Interfaces and connectors
RJ45 (PoE IN) – Connect to standard PoE switch (802.3af/at) for power + data.
RJ45 (PoE OUT) – Daisy‑chain to next gateway's PoE IN (cascade up to 8 units).
DC jack – 12‑30V DC input (alternative to PoE).
Reset button (recessed) – Long press 3 seconds to restore factory defaults.
Installation guide
Ensure the fixing surface can support ≥2 kg.
Use KA4 screws to securely mount the bracket to the ceiling (arrow direction as shown).
Align the gateway with the bracket, then push and turn to lock into place.
Connect the upstream Ethernet cable to the gateway's PoE IN port.
If cascading, connect another Ethernet cable from PoE OUT to the next gateway's PoE IN. Maximum cascade: 8 units.
⚠️ Mounting height ≤10m from tags. Tilt angle recommended <45° (theoretical limit 6° for optimal AoA performance).
LED indicator status
| LED status | Gateway state |
|---|---|
| Green fast flash (5 seconds) | Gateway booting / reset button reboot |
| Red fast flash | Acquiring IP address (DHCP) |
| Green slow flash | IP address obtained successfully |
| Green steady on | Connected to positioning engine successfully |
| Red steady on (30s then auto reset) | Local gateway fault / not connected |
| Red and green alternate slow flash | Gateway fault / not connected |
| No light (dark) | No power |
RJ45 connector LEDs:
Steady on – Link established.
Flashing – Data transmission.
Off – No network connection.
Technical specifications – GC305
| Dimensions (W×D×H) | 180.7 × 180.7 × 39.36 mm |
|---|---|
| Weight | ≈0.8 kg (without bracket) |
| Power supply | Standard PoE (IEEE 802.3af/at, Class 0) or DC 12‑30V / 1A. Consumption <2W. |
| Interfaces | 2× RJ45 (PoE IN, PoE OUT), 1× DC jack, 1× reset button |
| Frequency band | 2.401 – 2.481 GHz (Bluetooth Low Energy) |
| Mounting height | ≤10 metres (recommended) |
| Coverage per unit | Up to 2000 m² (open area) |
| Positioning accuracy | ≤1 metre (with AoA‑capable BLE tags, line‑of‑sight) |
| Cascade support | Up to 8 units in daisy‑chain |
| Protection class | IP66 (dust‑tight, powerful water jets) |
| Operating temperature | -20°C to +60°C |
| Storage temperature | -40°C to +85°C |
| Humidity | 0‑95% RH non‑condensing |
What the GC305 is NOT (honest limitations)
Not a standalone tag – This is a gateway. You need BLE AoA tags (sold separately) to track assets or people.
Accuracy depends on line‑of‑sight – Metal shelves, concrete pillars, and dense crowds reduce AoA precision. In obstructed environments, error may exceed 1m.
Mounting angle matters – The theoretical optimal angle for AoA is 6° from horizontal. Tilting beyond 45° will significantly degrade accuracy.
Not for explosive atmospheres – No ATEX/IECEx certification. Indoor and semi‑outdoor only.
PoE OUT limited to 8 units – Each gateway draws power for itself and passes through limited current.
No built‑in GPS – Time sync uses NTP over Ethernet. No GNSS receiver.
We'd rather tell you what it can't do than have you buy the wrong product. For sub‑metre AoA, you need proper tag placement and gateway orientation – we provide full layout support.
Real deployment: 500‑bed hospital ward
A large hospital in Germany deployed 45 GC305 gateways across two floors to track infusion pumps, wheelchairs, and staff badges. Each gateway was ceiling‑mounted at 3.5m height, spaced 25‑30m apart. The AoA system achieved consistent ≤0.8m accuracy, allowing nurses to locate an infusion pump to the correct patient room and side of the bed. The hospital reduced equipment search time by 75% and integrated the data into their existing asset management system via REST API.
Another client, a warehouse logistics provider, used GC305 gateways to track forklifts and pallet jacks. With cascade wiring (6 units in series), they saved 80% on network cabling compared to traditional PoE switches. The system also integrated with a BLE‑based zone alert – when a pedestrian entered a forklift area, the gateway triggered a local warning light.
Ready to deploy sub‑metre indoor positioning without the complexity?
Request a GC305 sample kit or a coverage simulation. We'll help you design the gateway layout and tag selection for your environment.
Request pricing & sample →Mobile: [+86] 189-7480-9810 (supports calls, WhatsApp, and WeChat)
Email: sales@cumond.com
Website: www.iot-solutionhub.com