Edge, on board
Devices, dashboards, automation and integrations run on the Gateway itself, so the site keeps working when the internet does not.
Gateway
ZGW-20
The Gateway every EpiSensor system reports to. It runs Edge on site, connects Zigbee sensors and wired Modbus and BACnet equipment, runs automation locally and sends data to the platforms you choose.
From €899 ex VAT
Runs Edge
Features
Protocols and interfaces
- Zigbee
- Ethernet
- 4G
- Wi-Fi
- Bluetooth
- LoRaWAN
- RS-485
- Modbus
- BACnet
- MQTT
250 wireless devices on one Gateway
A self-healing Zigbee mesh carries them all. EpiSensor devices need no extra licence.
Compute module
Standard, or High performance with 16 GB of memory and 64 GB of storage when your integrations need more. Either can add Wi-Fi and Bluetooth.
Status at a glance
A front-panel display and buttons show network, address and health, without a laptop.
Power
USB-C, a DC supply or Power over Ethernet. A last-gasp reserve lets the Gateway save its data when the power drops.
Optional 4G
A 4G modem runs alongside Ethernet, for sites where the building network is off limits. A data SIM can be added with it.
Industrial version
An IP68 wall-mount enclosure, and the only version that takes the I/O board and the relay board.
I/O board
Two 4-20 mA inputs, two pulse inputs and RS-485, wired straight to the Gateway.
Security
Ubuntu Core with signed updates through the snap channel, TLS 1.2 or later to external services and AES-128 on the sensor network.
Configure and buy
Choose the options for your site. The summary shows the line that goes into your cart.
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Works with
The Gateway runs Edge, connects every EpiSensor device and the equipment already on site, and sends data to the platforms you choose.
EpiSensor devices
Other manufacturers
Device DirectoryZigbee, Modbus and LoRaWAN devices from other manufacturers, with how each connects to Edge.Engineering tools
Reads these devices
Used in
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Multi-site energy monitoring
A Gateway on every site supports remote energy monitoring with local data continuity, a consistent point register and named owners for connections, credentials and change. -
Building energy management systems (BEMS)
Use the Gateway to build a trustworthy operating record across meters, HVAC, lighting and indoor conditions, with explicit point ownership, alarm response and control authority. -
Hotel energy management systems
Build a trustworthy energy and operating record across guestrooms, central plant and guest facilities without taking authority from approved hotel systems. -
Industrial energy monitoring
Measure significant energy uses alongside production context so engineers can separate operating changes, waste and genuine performance improvement. -
Tenant submetering and cost allocation
Meter each tenancy, the landlord supply and common services, and export a dated record that reconciles with the main meter. -
Transformer and distribution board monitoring
A meter at the incomer, meters on the feeders worth explaining, and a temperature probe where loading has to be read against heat.
37 more applications for this product
- Power quality and transformer capacity monitoring
- Data centre power monitoring and PUE inputs
- Water consumption monitoring for commercial buildings
- Healthcare energy management
- Pharmaceutical energy management
- Chiller performance monitoring
- Heat pump performance monitoring
- Boiler performance monitoring
- Compressed air energy monitoring
- Pump performance monitoring
- Supermarket energy monitoring
- Commercial kitchen energy management
- Refrigeration energy monitoring
- HVAC energy monitoring for commercial buildings
- Water and wastewater energy monitoring
- Warehouse and logistics energy monitoring
- Cold room and cold store temperature monitoring
- Legionella temperature monitoring
- Indoor environmental monitoring
- Server room and rack temperature monitoring
- Solar PV monitoring
- Solar inverter monitoring across a PV fleet
- Zero-export solar monitoring
- Generator remote monitoring
- Hybrid renewable energy monitoring
- Microgrid energy management
- Wind farm monitoring system and availability
- EV charging load management
- Battery energy storage monitoring and local control
- District heating network monitoring
- Battery demand response
- Electric boiler demand response
- Refrigeration demand response
- Modbus meter integration for a BMS or SCADA system
- Wired M-Bus heat meter integration
- Pulse meter remote monitoring
- 4-20 mA remote monitoring for process instruments
Questions engineers ask
How many devices can one Gateway run?
How many devices can one Gateway run?
Up to 250 wireless devices on its Zigbee mesh, with up to 1,000 sensor channels across those devices. EpiSensor devices need no licence; devices from other manufacturers take a third-party device licence.
Does it need an internet connection?
Does it need an internet connection?
No. Edge runs on the Gateway, so devices, dashboards and automation keep working on site without one. A connection is needed only to send data to other platforms or to manage the Gateway remotely.
How is it updated?
How is it updated?
Edge and the operating system are snaps on Ubuntu Core. Updates are signed and arrive through the snap channel, or from an approved local file on sites without internet access. Zigbee device firmware updates run over the mesh.
Which third-party devices can it connect?
Which third-party devices can it connect?
Zigbee devices, Modbus TCP and RTU equipment, BACnet systems and LoRaWAN sensors through a LoRaWAN network server that Edge connects to. The Device Directory shows how each device connects.
Commercial or Industrial?
Commercial or Industrial?
The Commercial version is an aluminium enclosure for a desk, shelf or rack. The Industrial version is an IP68 wall-mount enclosure, and the only one that takes the I/O board (4-20 mA, pulse and RS-485 inputs) and the relay board.
Where does the data go?
Where does the data go?
Wherever you choose: Edge sends it over MQTT, HTTPS or FTP(S) to your own platform or a supported integration. EpiSensor runs no cloud service in that path; Core adds fleet management if you want it.
Documentation
Datasheet
Gateway
Runs Edge on Ubuntu Core. Zigbee, Bluetooth and LoRaWAN radios, dual Ethernet, optional Cellular and GNSS, up to 250 devices.
User guide
Static IP Configuration (Linux)
Set a static IP address for the Gateway from a Linux workstation.
User guide
Static IP Configuration (Windows)
Set and verify a Windows 11 IPv4 address for a direct ZGW-20 management connection, then restore DHCP safely.
User guide
Static IP Configuration (macOS)
Set a static IP address for the Gateway from a Mac workstation.