Gateways
WHICH GATEWAY IS RIGHT FOR YOU?
ALTA IOT GATEWAY
Best for remote sites without internet
Cellular LTE
Choose one of the following gateways that suits your needs
ALTA Ethernet Gateway 4
The Monnit ALTA® Ethernet Gateway provides a reliable and secure connection between your Monnit Wireless Sensors and the iMonnit® Remote Monitoring Platform—without requiring a dedicated PC. Simply connect the gateway to power and plug it into an available Ethernet port with internet access. The gateway will automatically establish communication with Monnit's cloud servers, enabling real-time monitoring and instant alerts from virtually anywhere.
Ideal for commercial, industrial, and enterprise environments with an existing network infrastructure, the Ethernet Gateway offers a dependable solution for remote IoT sensor monitoring.
Key Features
-
Connects up to 100 ALTA® Wireless Sensors
-
Direct Ethernet connectivity with automatic cloud connection
-
No PC required for operation
-
Real-time monitoring and instant alert notifications
-
Supports Modbus TCP/IP, TCP/IP, and SNMP interfaces
-
Available in standard and Power-over-Ethernet (PoE) versions
-
Enterprise-ready architecture for advanced IoT applications
Power-over-Ethernet (PoE) Option
The PoE version features modified hardware that allows the gateway to be powered directly through the Ethernet connection, simplifying installation and reducing cabling requirements. (PoE Power Injector not included.)
Enhanced Enterprise Connectivity
The Ethernet Gateway 4 (EGW4) is designed to meet the demands of modern industrial and commercial IoT deployments. In addition to supporting up to 100 wireless sensors, it offers advanced integration capabilities for building management systems, SCADA platforms, and third-party monitoring applications.
Advanced EGW4 Features
-
Updated Modbus TCP/IP and SNMP support for the latest sensor profiles
-
Integrated Internet Management Information Base (MIB) for automatic gateway discovery by industry-standard management tools
-
Enhanced SNMP Walk functionality displaying only valid sensor data and active OIDs
-
Advanced SNMP interface supporting integer, hexadecimal, and human-readable string data formats
-
Flexible integration with existing enterprise monitoring systems
Third-Party System Integration
For organizations requiring direct access to sensor data outside of the iMonnit platform, the Ethernet Gateway supports alternative communication methods including Modbus TCP, SNMP, direct data push to on-premises servers, and third-party applications.
An optional unlock code is available to enable unrestricted data roaming from the gateway hardware, providing maximum flexibility for custom integrations and enterprise deployments.
Deploy a scalable, secure, and reliable wireless monitoring network with the Monnit ALTA® Ethernet Gateway and gain complete visibility of your critical assets and environments.
Part Number MNG2-8-EGW-CCE
Download Datasheet
ALTA IoT Cellular Gateway
The Monnit ALTA® IoT Cellular Gateway provides a reliable and secure connection between your ALTA® Wireless Sensors and the iMonnit® Remote Monitoring Platform using advanced 4G LTE CAT-M1/NB2 cellular technology. Designed for locations where wired internet is unavailable, impractical, or dedicated to other critical systems, the IoT Gateway eliminates the need for additional IT infrastructure.
Simply connect the gateway to a power source, and it will automatically communicate with your ALTA Wireless Sensors and securely transmit sensor data to the iMonnit cloud platform. This enables real-time monitoring, instant alerts, and remote access to critical environmental and equipment data from virtually anywhere in the world.
Available in both Commercial and Industrial versions, the ALTA IoT Gateway is ideal for remote sites, utilities, agriculture, cold storage facilities, equipment monitoring, and industrial applications.
Key Features
-
Cellular Connectivity Without Additional Infrastructure
-
4G LTE CAT-M1/NB2 cellular communication
-
No wired internet connection required
-
Ideal for remote and hard-to-reach locations
-
Automatic connection to the iMonnit cloud platform
Exceptional Wireless Range
-
Communicates with ALTA Wireless Sensors up to 365 metres away
-
Supports large facilities, outdoor applications, and distributed monitoring environments
Enterprise-Grade Security
-
Encrypt-RF® wireless security technology
-
Diffie-Hellman 256-bit key exchange
Reliable Backup Power
-
AC-powered with an integrated rechargeable backup battery
-
Up to 60 hours of operation during power outages
-
Continues transmitting sensor data and alerts even when mains power is lost
Scalable Monitoring Solution
-
Supports up to 100 ALTA Wireless Sensors on a single gateway
-
Easily expand your monitoring network as requirements grow
Uninterrupted Data Collection
-
Onboard memory stores up to 32,000 sensor messages
-
Data collected during cellular outages is automatically transmitted when connectivity is restored
-
No loss of critical monitoring information
Future-Proof Technology
-
Firmware Over-The-Air (FOTA) updates included
-
Remote firmware upgrades ensure your gateway remains secure and up to date
Additional Connectivity Options
The Commercial version includes an RJ-45 Ethernet port for local device configuration, simplifying deployment and management. Enterprise models combine cellular connectivity with Ethernet capabilities, providing flexible integration options for advanced monitoring environments.
Global Cellular Coverage
The ALTA IoT Gateway supports LTE CAT-M1/NB2 connectivity across a broad range of global frequency bands, making it suitable for deployments in multiple countries and regions worldwide.
Deploy a powerful, secure, and scalable wireless monitoring solution with the Monnit ALTA® IoT Cellular Gateway and gain complete visibility of your critical assets, equipment, and environments—anytime, anywhere.
Part Number MNG2-8-CME-CCE-ND
Download Datasheet
Serial Modbus Gateway
The Monnit ALTA® Serial Modbus Gateway (SMG) serves as a powerful data concentrator, seamlessly bridging Monnit’s long-range ALTA® Wireless Sensor network with existing Modbus-based industrial control systems. Designed for easy integration into SCADA, PLC, RTU, and building management systems, the SMG enables organizations to expand their monitoring capabilities without the cost and complexity of installing additional wiring.
Each gateway supports up to 50 ALTA Wireless Sensors, allowing critical environmental and equipment data to be transmitted directly to existing serial Modbus RS-232C and RS-485 infrastructures.
Seamless Integration with Existing Systems
By supporting the widely adopted Modbus protocol, the ALTA Serial Modbus Gateway allows wireless sensor data to be incorporated into virtually any industrial automation, process control, or facility management system. This open-standard approach ensures compatibility with a broad range of third-party hardware and software platforms.
Extend Your SCADA and Control Network
Modbus is one of the most commonly used communication protocols in industrial environments, particularly within Supervisory Control and Data Acquisition (SCADA) systems. The ALTA Serial Modbus Gateway enables wireless sensors to communicate with supervisory computers, Remote Terminal Units (RTUs), Programmable Logic Controllers (PLCs), and other Modbus-enabled devices.
With support for networks containing up to 247 Modbus devices, the gateway provides a simple and cost-effective way to add wireless monitoring capabilities to existing wired control networks, significantly extending coverage without additional cabling.
Key Features
-
Connects up to 50 ALTA® Wireless Sensors per gateway
-
Supports Modbus RS-232C and RS-485 serial communications
-
Integrates easily with SCADA, PLC, RTU, and Building Management Systems (BMS)
-
Utilizes the industry-standard Modbus protocol
-
Eliminates the need for costly sensor wiring installations
-
Enables wireless expansion of existing industrial networks
-
Long-range wireless communication for reliable data collection
-
Ideal for industrial automation and remote monitoring applications
The Monnit ALTA® Serial Modbus Gateway provides a reliable and scalable solution for integrating wireless sensor technology into existing Modbus networks, helping organizations reduce installation costs while gaining greater visibility into critical assets and operations.
Part Number MNG2-8-SG-SMG
Download Datasheet
Wireless Sensor Adapter
The Monnit ALTA® Wireless Sensor Adapter provides a simple and cost-effective way to connect ALTA® Wireless Sensors directly to a PC, server, or third-party IoT gateway via USB. Acting as a compact wireless gateway, the adapter enables seamless communication between your ALTA sensor network and local or cloud-based monitoring platforms.
Ideal for custom IoT applications, local monitoring systems, and software integrations, the ALTA Wireless Sensor Adapter offers maximum flexibility for organizations looking to incorporate Monnit's industry-leading wireless sensors into existing systems.
Easy PC-Based Monitoring
Simply connect the ALTA Wireless Sensor Adapter to a computer with an active internet connection and install the free gateway application. The adapter will receive data from nearby ALTA Wireless Sensors and securely transmit it to the iMonnit® Sensor Monitoring Platform for remote access and management.
This solution is ideal for applications where a dedicated gateway is not required or where sensor data needs to be managed through an existing PC or server.
Cloud-Based Monitoring with iMonnit®
When connected to the iMonnit cloud platform, users can:
-
Monitor sensor data in real time from any web-enabled device
-
Configure sensors and network settings remotely
-
Create custom dashboards and reports
-
Receive instant alerts via SMS, email, or mobile notifications
-
Manage multiple sites and sensor networks from a single interface
-
Access historical data and trend analysis
The iMonnit platform provides complete visibility and control at the individual sensor, site, or enterprise level.
Local Monitoring with iMonnit Express
For users who prefer local monitoring, the ALTA Wireless Sensor Adapter works with iMonnit Express software to collect and store sensor data directly on a PC.
Benefits include:
Local data collection and storage
CSV data export for analysis and reporting
Real-time sensor monitoring
Email and SMS alert notifications
No cloud dependency for on-site monitoring applications
Designed for IoT Integration
The ALTA Wireless Sensor Adapter is specifically engineered to support the growing demand for Industrial IoT (IIoT), Machine-to-Machine (M2M), and remote monitoring applications. System integrators and IoT developers can easily incorporate ALTA Wireless Sensors into custom platforms, gateways, and third-party monitoring systems.
Its flexible USB connectivity makes it an excellent choice for developers, OEMs, and organizations building bespoke monitoring solutions.
Key Features
-
Connects ALTA® Wireless Sensors to a PC or third-party IoT gateway
-
Simple USB interface for fast deployment
-
Compatible with iMonnit® cloud monitoring software
-
Supports local monitoring with iMonnit Express
-
Real-time sensor data collection and reporting
-
SMS and email alert notifications
-
Easy integration into custom IoT and M2M applications
-
Ideal for industrial, commercial, and remote monitoring projects
Part Number MNG2-8-WSA-USB