KNOT
IoT Gateway for the most versatile
and cost-eective setups
CAT-M/NB
technology
2.4 GHz
wireless
MicroUSB GNSS GPIO RS485/Modbus
Bluetooth 2x 100 Mbps
Ethernet ports
PoE-in &
PoE-out
The newest addition to the MikroTik IoT product family – KNOT – is a truly universal device
with exceptional connectivity options and protocol support. It is an IoT Gateway that uses
Narrow Band and CAT-M technology. Because of the low cost, low bandwidth cellular
connection, it is supported by countless mobile operators around the globe.
It doesn’t matter whether you have devices that are no longer in production, devices that
came out this year, or even some custom solutions by your technician – the KNOT can help
you integrate or “tie” them all together in a single system.
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 and actuators,
such as electricity meters and relays.
100 Mbps Ethernet DC jackMicroUSB
NB/CAT-M
GNSS
NanoSIM slotModbus
CAT-M brings better connectivity to host - reach even previously unavailable places!
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 moisture sensors with only a few megabytes per day!
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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, MicroUSB. 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.
Bring flexible low-cost connectivity to the most remote or tricky areas with the MikroTik KNOT!
How would all this work in real life? Well, let’s imagine a hospital. Lots of expensive assets
moving across huge buildings. Tools, equipment, meds, you name it. Everything gets
moved around all the time. Usually, hospitals have to spend a lot of resources on inventory
checking.
Let’s fix that. Place low-cost Bluetooth tags on all the important items. Add a KNOT device
in every storage room. Now the hospital management always knows if the equipment is
returned to its place. Why stop there? You can add temperature sensors to medical supplies
and use the KNOT to keep track. The possibilities are endless.
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Narrow Band and CAT-M technology is supported by many operators around the world!
* According to the 3GPP deployment map, Feb 2021 https://www.gsma.com/iot/deployment-map/
Specifications
Product code RB924i-2nD-BT5&BG77
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)
Operating temperature -40°C to +70°C
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Powering
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)
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 & Approvals
Certification Bluetooth, CE, FCC, IC
Wireless specifications
Rate (2.4 GHz) Tx (dBm) Rx (dBm)
1MBit/s 22 -96
11MBit/s 22 -89
6MBit/s 20 -93
54MBit/s 18 -74
MCS0 20 -93
MCS7 16 -71
Bluetooth Wireless Specification
1M 4 -93
Supported bands
Module 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
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Included parts
24 V 1.2 A
power adapter
Wall mount
set
DIN rail
mount set
USB A Female to
Micro B cable
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