Bosch FCP-OT320 820 Ohm Alarm Resistor Conventional Optical and Thermal Detector

It is a detector that operates in conventional fire detection zones and combines optical and thermal sensors, and is supplied with 820 Ohm alarm resistance. As the optical chamber becomes soiled, the threshold value is automatically corrected, so the device's sensitivity does not drift over time. It is applied in facilities without addressable panels such as small businesses, branch offices, and schools. The dust-repellent labyrinth structure extends the cleaning interval in workshop-like environments.