Edwards ESD-CJ

The Edwards ESD-CJ is a duct smoke detector controller designed for 4-wire conventional fire alarm systems, featuring selectable input voltage operation and dual relay output. The RJ45 connector interface allows flexible sensor connectivity, with operational sensitivity ranging from 0.67 to 2.46% per foot and 2-second alarm response time for reliable duct smoke detection in commercial HVAC systems.

Key Features

• 4-wire conventional duct smoke detector controller with RJ45 sensor interface
• Selectable input voltage: 24V DC, 24V AC, 120V AC, or 230V AC operation
• Remote test station compatibility for accessible maintenance testing
• Form C relay outputs (two independent contacts for alarm/trouble indication)
• Adjustable sensitivity range: 0.67 to 2.46% per foot per UL 268 standards
• 2-second alarm response time for rapid detection
• Maximum 18V DC nominal input with low power draw (0.03A max standby)

Technical Specifications

• Control Type: 4-Wire Conventional Duct Smoke Detector Controller
• Sensor Interface: RJ45 connector (SuperDuct standard)
• Input Voltage: 24V AC/DC, 120V AC, or 230V AC selectable
• Nominal Input: 18V DC nominal
• Current Draw: 0.03A maximum standby
• Sensitivity Range: 0.67 to 2.46% per foot (field adjustable)
• Alarm Response: 2-second maximum response time
• Relay Contacts: Two Form C (2A @ 30V DC or 10A @ 30V DC/250V AC)
• Weight: 1.9 lbs
• Standards: UL 268 fire detection, NFPA 72 National Fire Alarm Code

Certifications

• UL 268 Listed duct smoke detector controller
• NFPA 72 compliant fire detection control device
• Component of Edwards-Signaling SuperDuct detection systems