Heat Detectors

SD505-HEAT Addressable Heat Sensor

The SD505-HEAT is an addressable fixed temperature heat sensor that uses a thermistor sensing circuit to produce an alarm when the temperature goes above the trip point programmed at the panel


SD505-HEAT addressable heat sensorsare suited to virtually any commercial setting.They are an absolute temperature device. This means that it responds in alarm if the temperature goes above the trip point (programmed at the panel).Addressable heat sensorsprovide accurate temperature measurement data to the fire alarm control panel. This heat detector is particularly suited to environments where smoke detectors cannot be used because of the presence of steam or cooking fumes, such as in a kitchen. The SD505-HEATaddressable heat sensor unit is made up of an externally mounted thermistor with a specially designed cover that protects the thermistor while allowing maximum air flow. The thermistor reads the temperature from the air it takes in. It then transmits a signal representing the temperature to the panel. If the temperature exceeds the trip point, an alarm occurs. The status LED lights continuously during the alarm period. Under normal conditions, the status LED blinks approximately every 15 seconds, indicating that the head is communicating with the loop.

Features & Benefits:
  • Absolute temperature device
  • Low profile, only two inches including the base
  • Uses digital communication protocol
  • Simple and reliable addressing<
  • Available in a pack of 10
  • UL Listed (Meets Requirements Outlined in NFPA 72 Inspection Testing and Maintenance, Chapter 7)
  • CFSM Listed
  • MEA Listed
  • FM Approved