RB924i-2nD-BT5&BG77 - MikroTik KNOT IoT Gateway with CAT-M1, RS485, Bluetooth, USB and more
Features
MikroTik KNOT IoT Gateway RB924i-2nD-BT5&BG77
KNOT - is a truly universal device with exceptional connectivity options and protocol support. It is an IoT Gateway that uses Narrow Band and CAT-M1 technology. Because of the low cost, low bandwidth cellular connection, it is supported by countless mobile operators around the globe.
KNOT can monitor onboard GPIOs, convert Modbus protocol to TCP, and even forward Bluetooth packets to TCP/IP network via HTTPS and MQTT.
You can use the KNOT as a TCP bridge from wired Modbus sensors to send readings to a Modbus server. Yes, the KNOT brings wireless connectivity to wired sensors, such as electricity meters and relays.
It could be used as a backup connection for the Ethernet or as a management channel for your network. NB/CAT-M monthly plan is much cheaper than LTE. Why spend extra money on bandwidth you don't need? For example, you can manage a KNOT-powered vending machine with temperature and liquid sensors with only a few megabytes per day!
KNOT features so many protocol support and connectivity options:
2.4 GHz wireless, Bluetooth, 2x 100 Mbps Ethernet ports with PoE-in and PoE-out, Micro-USB. Maximum convenience at the lowest cost!
With the Bluetooth interface, you can use the KNOT for asset tracking and telemetry based on Bluetooth advertisement packets. KNOT supports any BLE tag that sends advertisement data. iBeacon, Eddystone or any other format.
It has powerful filters for forwarding only relevant packets and ignoring others.
KNOT is a great tool for most outdoor cabinet IoT applications as well. It comes with a DIN rail mount that allows easy integration with all kinds of setups: from agriculture and asset tracking to cold chain monitoring, industrial manufacturing, and so on.
- CAT-M1 and CAT-NB2 technology
- 802.11bgn Wi-Fi
- Bluetooth 2x 100 Mbps
- PoE-in & PoE-out
- MicroUSB, GNSS, GPIO and RS485/Modbus

Specifications
Technical Specifications
| Brand | MikroTik |
|---|---|
| MPN | RB924i-2nD-BT5&BG77 |
| Cat M1: LTE FDD | B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85 |
| Cat NB2: LTE FDD | B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B28/B66/B71/B85 |
| Region | Global |
| GNSS (Optional) | GPS/GLONASS/BeiDou/Galileo/QZSS |
| CPU | QCA9531 650 MHz |
| Number of 100 Mbps Ethernet ports | 2 |
| Number of 100 Mbps Ethernet ports with PoE-out | 1 |
| Size of RAM | 64 MB |
| Storage | 16 MB flash |
| Wireless | 2.4 GHz 802.11 b/g/n dual-chain |
| Antenna gain | 1.5 dBi |
| Bluetooth antenna gain | 2 dBi |
| Antenna beam width | 360° |
| Bluetooth Version | 5.2 |
| Dimensions | 122 x 87 x 26 mm |
| Operating system | RouterOS, License level 4 |
| USB port | 1 microUSB port type AB |
| SIM slots | 1 Nano SIM |
| Built-in GPS | Yes (GPS, GLONASS, BeiDou, Galileo) |
| Bluetooth RF connector type | uUFL |
| GPS RF connector type | SMA |
| Operating temperature | -40°C to +70°C |
| PoE-in input Voltage | 12-57 V |
| Number of DC inputs | 3 (PoE-in, DC jack, MicroUSB) |
| Supported input Voltage | 12-57 V (PoE-in. DC jack), 5 V (MicroUSB) |
| PoE-out | 802.3af/at |
| PoE-out ports | 1 (Ether2) |
| PCB temperature monitor | Yes |
| Power adapter nominal voltage | 24 V |
| Power adapter nominal current | 1.2 A |
| Max power consumption (without attachments) | 5 W |
| Max power consumption | 18 W |
| Certification | Bluetooth, CE, FCC, IC |
| Brand | MikroTik |
|---|---|
| Product Type | Networking > Network Accessories |
| Weight | 1.01 kg |
| Warranty |
|---|
Note:
Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.
Shipping Information
- Free NZ-wide shipping on orders over $299
- Standard delivery 2–5 business days
- Rural delivery may take an additional 1–2 days
- Same-day dispatch for orders placed before 2pm (weekdays)
Returns Policy
- 7-day returns on unused items in original packaging
- Faulty or damaged products covered under warranty
- Contact our support team to initiate a return









