Bosch F220-135 Electronic Rate-of-Rise/Fixed Temperature Heat Detector

An electronic rate-of-rise, fixed temperature heat detector that initiates an alarm when the ambient temperature exceeds +135°F (+57°C) or when the ambient temperature increases by +15°F (+8.3°C) or more in less than 1 minute. The detectors use low current electronic circuitry, so they can connect to 12 VDC nominal or 24 VDC nominal power source circuits. When mounted on the appropriate F220-B6 Series Mounting Base, the F220 Heat Detectors provide general property protection
from fire.

Features

• Two-wire or four-wire bases
• 50 ft (15.2 m) maximum spacing between detectors
• Visible identification of model: F220-135 = no ring
• Tamper detection
• Dual color LED