PWM Fan Speed Control and Alarm for 4-wire Fans

• Power feed options:
  Single
  Dual diode OR'd (positive, negative, both, none)
  
• Controls fans with open collector or 0-12 VDC control signal requirements:
  
• PWM fan speed control based on:
  I2C interface (single or dual)
  Temperature at an on-board or remote thermistor
  Analog control signal (PWM, 5.0 VDC)
  
• Single or dual I2C interface capability:
  Set PWM fan speed control based on temperature or I2C commands
  Write fan speed commands (including on/off)
  Read pass/fail status for each fan
  Read temperature readings from an on-board thermistor
  Allow access to EEPROM storage
• Monitors open collector or voltage source tach pulses from the fans and provides pass/fail status for each fan through the I2C interface, LED and CMOS outputs
• Compatible with SmartFan Multi SD for telecom 10-75 VDC dual feed buck regulator applications
• Optional individual fan fusing
  
• Sensors

• Power source: 10 to 60 VDC, single or dual feed
• Current Rating: 6 Amps @ 60°C or less
• Power source is fused with reverse polarity protection
• Fans: Up to six 12, 24, or 48 VDC 4-wire fans
• On-board 3.3 / 5.0 VDC isolated power for I2C and control signal interfaces
• Storage temperature: -40°C to 125°C
• Operating temperature: -20°C to 60°C
• Temperature accuracy and hysteresis: 2°C
• Weight: 1.9 oz (54 grams)
• RoHS (6/6) compliant

When used in the temperature or transducer (5.0 VDC) control mode, a sensor (sold separately) is required.
Choose an air, surface or liquid temperature sensor or humidity sensor from the CRI catalog or via your own transducer.