Thermistor temperature sensor EAS-1

encapsulated

Overview
Designed for the EAS-1 electronically activated sprinkler system, this heat sensor connects to ESFR-17 sprinkler heads. The epoxy-encapsulated electronic thermal element is engineered to withstand high temperature and high humidity environments. It supports both fixed-temperature and rate-of-rise (RoR) sensing for fast, reliable detection.

How the system works
Each sprinkler head is fitted with a co-located heat sensor wired back to the suppression releasing control panel. When sensors detect elevated temperature, the control panel identifies the fire location and activates only the sprinkler heads required to address the hazard, triggering them simultaneously to limit spread and water usage.

Benefits

• Retrofit compatible: Replaces sprinkler heads on existing piping to avoid extensive new pipework or pump upgrades.
• Increased storage flexibility: Allows changes to storage layout and commodity classification without modifying the suppression piping.
• Reduced fire impact: Localized, early activation reduces direct and indirect property damage and operational downtime.
• Lower water and cleanup costs: Earlier detection typically limits fire size and reduces required water discharge and cleanup effort.

Technical specifications

• Application: Storage / Warehouse
• Hazard classification: Storage — High
• Maximum heads/sensors: 3,000 heads with sensors per EAS-1 control unit
• Approvals: UL and C-UL Listed
• Installation requirements: Co-located heat sensor must be installed within 12 inches (30.5 cm) laterally and 36 inches (0.9 m) vertically
• Fixed temperature settings: 155°F / 175°F (57.2°C / 88°C)
• Rate-of-rise (RoR): -20°F / min. (-7°C / min.)
• Design: Epoxy-encapsulated electronic thermal sensor; intended for high temperature and high humidity conditions
• Note: See Technical Data Sheet for full details