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Audited Supplier Industrial Grade NB-IoT RTU
CoAP/China Telecom NB-IoT Cloud/Industrial Grade Workmanship/Low Power Consumption/DI&DO
Power Failure Warning
In the event of a sudden power failure, the backup power supply will be activated and a power failure warning will be sent automatically, allowing users to know the status of the equipment in real time.
Independent R&D-Support script programming
PSM Low Power Mode
The device runs with low power consumption and can't receive downlink data from the data center. The RTU must actively upload data and enter the connection mode before the center can send data. After no data communication, MDNR311 RTU automatically enters PSM mode to maintain low power consumption standby.
SMS Push
The device can connect to the mobile phone through the Mind IoT cloud, and push data messages to the mobile phone in time. It supports sending to multiple mobile phones at the same time. Please contact online customers for consultation.
Heartbeat Packet Mode
By continuously sending data to connect to the server normally, the device is in an active state, ensuring the normal operation of device communication.
Software&Hardware Dual Watchdog
Adopting the hardware solution of "communication brand module + external independent 32-bit ARM core CPU"
Support local/remote configuration upgrade
The user does not need to upgrade the firmware/software on the device site, and can remotely operate the device firmware/software upgrade through the monitoring center, saving manpower. The upgrade interface is fully graphical operation, unified with the local upgrade operation interface, and the device can operate normally during the remote upgrade process.
Technical Parameters
| Characteristics | Descriptions |
| Power supply | VIN interface: DC5V-30V |
| BAT interface: DC3.5V-4.2V | |
| Power consumption | Regular version:VIN interface, DC12V Power Supply Online Mode Current:60mA-150mA Peaking working Currentt:500mA PSM/IDLE Mode Current:≈13mA |
| Low power version: BAT interface, 3.7V Lithium battery Power Supply Online Mode Current:60mA-150mA Peaking working Currentt:500mA PSM/IDLE Mode Current:≈20uA |
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| Frequency Band | MDN311-B5: China Telecom 850M MDN311-B8: China Mobile/Unicom 900M MDN311-Bx: International version |
| Network | NB-IoT UL/DL:200kbps/200kbps |
| SIM Card | Micro SIM:3V |
| Antenna Connector | SMA connector-external thread inner hole |
| Series Data interface | RS232,RS485 Level Baud Rate:1200-38400bps Data bits: 8 Parity check:No Stop bits:1bits |
| Temperature range | Working environment temperature: -30°C to +75°C Storage temperature -40°C to +85°C |
| Humidity range | Relative humidity 95% (no condensation) |
| Physical characteristics | length: 10.5cm, width: 6cm, height: 2.2cm |
Suppliers with verified business licenses
Audited Supplier 
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