Products
Intelligent Controllers
Zero Trust at the door and the fence line, on the wiring already installed.
Intelligent Controller product family
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Universal Field Panel™
GatewayThe gateway at the heart of every Universal Field Panel™, from the edge to the enterprise.
View product: Universal Field Panel™ Gateway
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Universal Field Panel™
Expansion ModulesAdd inputs, outputs and readers to a Universal Field Panel™ as the site grows.
View product: Universal Field Panel™ Expansion Modules
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DESI Controller
Replaces the end-of-line resistor and gives every analog sensor a cryptographic identity.
View product: DESI Controller
Side by side
What each one does at the edge
The gateway, the expansion modules that extend it, and the controller that makes devices trustworthy. Open any product for specifications.
| Universal Field Panel™ Gateway | Universal Field Panel™ Expansion Modules | DESI Controller | |
|---|---|---|---|
| What it is | The brain of every Universal Field Panel | Inputs, outputs and readers for a panel | Cryptographic identity for analog devices |
| What it does | Authenticates downstream devices and hosts edge applications | Add DESI channels, inputs, relays and reader ports | Replaces the end-of-line resistor and authenticates I/O |
| Where it runs | At the core of the panel | Under a gateway, local or remote | Inches from the sensor or lock |
| Form | Hardware, DIN rail mounted | Hardware: PM-4, EM-8 and EM-16 modules | Hardware: three variants, inch-scale |
| Works with | Up to 16 Expansion Modules and 64 DESI devices | The Universal Field Panel Gateway, DESI and OSDP readers | Universal Field Panel, PCU and OEM devices by license |
Swipe horizontally to compare all three products
Where it sits
Intelligent Controllers sit in Acquisition and Control, in line at the far edge. They are the enforcement point where every sensor, reader and door is authenticated before its data moves up.
- Enterprise Consumers Purdue 4 to 5
- IT and OT Operations Purdue 2 to 3
- Acquisition and Control Purdue 1
- OT EdgePSG embedded Purdue 0
How it works
Where trust begins, on the wiring you have
The enforcement point between IT and OT
The Universal Field Panel sits in line at the edge as the bridge between IT and OT. It authenticates each session, restricts communication to authorized protocols, enforces least privilege, blocks unauthorized commands and continuously verifies device identities. The Universal Field Panel™ Gateway is the brain of every panel; Universal Field Panel™ Expansion Modules add inputs, outputs and readers under it, up to 16 per gateway.
Why Zero Trust needs DESI
A panel can authenticate sessions, but an analog sensor cannot prove who it is. DESI replaces the end-of-line resistor at the sensor or output with a FIPS-compliant cryptographic identity, so every input is validated before acceptance and every output before execution. Zero Trust at the device requires DESI, or Chip on Board for new OEM devices.
Where trust at the source begins
PSG is the Embedded Zero Trust Architecture for Physical Security, and this is the layer where it is embedded. Each reader, sensor and door gets a trusted device identity, communications are authenticated, and only verified data moves up to command and control, the enterprise and AI. Tamper, side-band attacks and loss of control voltage are reported as alerts.
How it fits with what is installed
Existing sensors, locks, readers and wiring stay in place. Each panel supports up to 128 inputs, 64 outputs and 16 readers, digital or analog, and multiple DESI devices share a single pair of wires, cutting cabling by more than half on new work. A site modernizes input by input, in step with maintenance windows: modernization without rip-and-replace.
Explore by industry
Utilities & Grid
CIP-014 physical security for substations and generation.
Nuclear Power & DOE Sites
Material protection, control and accounting.
Defense Installations
PL1 through PL4, weapons storage and flight lines.
Downloads
Data sheet, brochure and specification documents for the products in this category.
Specifying PSG?
Product pages carry the CSI section, data sheet and A&E resources for each product. Register for the A&E program for direct support from PSG systems engineers.
Register for the A&E programZero Trust at the far edge, starting now.
Tell us how many doors and inputs you run and what is installed. Visit with a PSG systems engineer about which panel and controllers fit the wiring you have.