Overview
The Ubiquiti UDB-IOT-US UniFi Device Bridge IoT is an ultra-compact wireless bridge designed to connect wired IoT equipment to a UniFi wireless network. It provides a single 10/100M RJ45 Ethernet port and uses 2.4GHz WiFi 4 with 2x2 MIMO.
The Device Bridge IoT supports UniFi WiFi Auto-Link and can be powered either through USB Type-C at 5V DC or through its 4-pin DC socket with a 9–30V DC input range. Its compact enclosure supports wall or DIN-rail installation.
Wireless Connectivity
The integrated 2.4GHz radio supports 802.11n WiFi 4 with a maximum PHY data rate of 300Mbps using 40MHz channel bandwidth. The internal antenna provides 4dBi gain, while the RP-SMA connector supports the supplied external omni antenna with 3dBi gain.
Wired IoT Connection
A single 10/100M RJ45 Ethernet port provides the wired connection for an IoT device or other Ethernet-only equipment. The UDB-IOT-US acts as the wireless network bridge rather than functioning as a conventional multi-port Ethernet switch.
Power Options
The bridge supports two power input methods. USB Type-C accepts 5V DC at 1A, while the 4-pin DC socket accepts 9–30V DC. Maximum power consumption is 2.3W, making the device suitable for installations where compact low-power equipment is required.
Mounting and Installation
The Device Bridge IoT can be installed on a wall or DIN rail using the included mount. Its small enclosure measures 63 x 44.5 x 25.5mm, increasing to 89 x 44.5 x 25.5mm when the external antenna is attached.
Key Features
- Ultra-compact 2.4GHz WiFi 4 bridge for wired IoT equipment
- Single 10/100M RJ45 Ethernet interface
- USB Type-C or 9–30V DC power input
- Internal antenna plus RP-SMA external omni-antenna connection
- Wall and DIN-rail mounting with included mount
Applications
- Connecting wired IoT devices to UniFi WiFi
- Wireless integration of Ethernet-only sensors and controllers
- Compact industrial and building automation deployments
- DIN-rail installations requiring a small wireless Ethernet bridge
- Low-power network connectivity for distributed IoT equipment
Specifications
| Brand | Ubiquiti |
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| Part Number / MPN | UDB-IOT-US |
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| Product Type | Wireless IoT Device Bridge |
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| Product Family | UniFi Device Bridge IoT |
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| WiFi Standard | WiFi 4 (802.11n) |
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| Wireless Band | 2.4GHz |
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| Spatial Streams | 2 |
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| MIMO | 2x2 |
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| Maximum Wireless Data Rate | 300Mbps (BW40) |
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| Channel Bandwidth | 20/40MHz |
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| Maximum TX Power | 20dBm |
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| Internal Antenna Gain | 4dBi |
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| External Antenna | 3dBi external omni via RP-SMA |
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| Networking Interface | 1x 10/100M RJ45 |
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| Wireless Security | WPA2 AES |
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| USB-C Power Input | 5V DC, 1A |
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| DC Socket Input | 9–30V DC |
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| Maximum Power Consumption | 2.3W |
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| Mounting Locations | Wall, DIN rail |
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| Dimensions | 63 x 44.5 x 25.5mm |
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| Dimensions with External Antenna | 89 x 44.5 x 25.5mm |
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| Weight | 45g; 53g with external antenna |
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| Enclosure Material | Polycarbonate |
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| Mount Material | Polycarbonate |
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| Operating Temperature | -10 to 50°C (14 to 122°F) |
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| Operating Humidity | 5–95% noncondensing |
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| Management | WiFi |
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| Reset | 1x factory reset button |
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| Status Indicators | 4 blue signal LEDs; 1 white/blue indicator |
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| NDAA Compliant | Yes |
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| Certifications | CE, FCC, IC |
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FAQs
What is the UDB-IOT-US used for?
It provides wireless connectivity for wired IoT equipment by bridging a device connected to its Ethernet port onto a compatible UniFi wireless network.
What Ethernet speed does it support?
The device has one 10/100M RJ45 Ethernet port.
Does the UDB-IOT-US support an external antenna?
Yes. It has an RP-SMA connector for an external omni antenna. Ubiquiti specifies 3dBi gain for the external antenna.
How can the bridge be powered?
It can be powered through USB Type-C at 5V DC / 1A or through the 4-pin DC socket at 9–30V DC.
Can it be mounted on a DIN rail?
Yes. The UDB-IOT-US supports both wall and DIN-rail mounting using the included mount.
What WiFi standard does it use?
The bridge uses 2.4GHz WiFi 4 with 2x2 MIMO and a maximum specified data rate of 300Mbps at 40MHz channel bandwidth.
