Fenwal Controls' Detect-a-Fire horizontal heat detectors come in the form of surface mount and flush mount varieties, with activation temperatures between 60°C and 385°C.

Using a rate compensation method, Fenwal heat detectors precisely detect a rise in air temperature during both fast-rate and slow-rate fires, offering advantages over fixed-temperature or rate-of-rise devices. This makes the Detect-a-Fire range suitable for a diverse range of applications for the activation of overheat alarms and actuating fire suppression systems, including oil and gas facilities, food production facilities, service stations, commercial and public premises and fast food outlets.