Honeywell JACE-91250 Technical Specifications
General Information
Manufacturer: Honeywell (Tridium Niagara Framework)

Model: JACE-91250

Type: Advanced Building Automation Controller

Primary Use: HVAC, lighting, security, and energy management integration

Hardware Specifications
Processor & Memory
CPU: Quad-core ARM Cortex-A9 @ 1.0 GHz

RAM: 2 GB DDR3

Flash Storage: 8 GB eMMC (expandable via microSD)

Communication Ports
Ethernet: 2× 10/100/1000 Mbps (RJ45)

Serial Ports: 2× RS-485 (for BACnet MS/TP, Modbus RTU, etc.)

USB: 2× USB 2.0 (for configuration/drivers)

Wireless: Optional Wi-Fi/4G LTE module

Expansion & I/O
Slot for Expansion Modules: Supports Honeywell I/O modules (e.g., analog/digital)

Max Supported Points: ~100,000 (software-dependent)

Software & Protocols
Operating System: Embedded Linux (Niagara 4 Framework)

Supported Protocols:

BACnet (IP & MS/TP)

Modbus (TCP/RTU)

LonWorks (optional)

OPC UA/DA

MQTT (for IoT/cloud connectivity)

SNMP (network monitoring)

Performance & Capacity
Concurrent Users: Supports 50+ simultaneous connections

Alarm Capacity: 50,000+ alarms

Database Storage: 5+ years of trend data (configurable)

Power & Environmental
Power Supply: 24V AC/DC or PoE+ (Power over Ethernet)

Power Consumption: 15W (typical)

Operating Temperature: -40°C to +70°C (-40°F to +158°F)

Humidity: 10–90% non-condensing

Ingress Protection: IP30 (indoor use)

Certifications & Compliance
UL 916 (Energy Management)

CE, FCC, RoHS

BACnet BTL Listed

Cybersecurity: TLS 1.2/1.3, role-based access

Key Features
✔ High-performance edge controller for large-scale BMS
✔ Multi-protocol integration (legacy & modern systems)
✔ Cybersecurity hardened (SSL encryption, secure boot)
✔ Cloud-ready (Niagara Edge-to-Cloud)

Typical Applications:

Smart buildings

Data centers

Industrial automation