SmartFan® Wisp II

     Fan Speed Control Probe

Fan speed control and temperature control  WispII
Fan speed control and temperature control


SmartFan Wisp II Fan Speed Control

SmartFan Wisp II is designed for small DC fan speed control applications and includes both a temperature control and sensor circuit packaged in a probe for convenient remote or on-fan mounting. The controller uses a linear operating principle, applying a smooth DC voltage to the fans. It is available for both Closed-Loop (temperature regulating) and Open-Loop (temperature compensating) applications. The controller’s power rating is sufficient to control up to three typical 120 mm fans. Wisp II accepts an 11.5 to 30 VDC supply voltage range for controlling 12 and 24 VDC fans. The Wisp II design allows maximum flexibility for special applications including on-off capability, 48 VDC operation, temperature alarm, and custom control parameters. Contact CRI customer service for details.

In addition to the standard line of SmartFan controls and alarms, Control Resources also provides custom control design and manufacturing services to provide you with the optimum cooling solution for your OEM control applications.


Product Features - SmartFan Wisp II Fan Speed Control

  • Noise reduction typically 15 dB(A) at idle speed
  • Completely self contained including sensor
  • Controls 12, and 24 VDC fans
  • Accepts a supply voltage range of 11.5 to 30 VDC
  • 70ºC maximum operating temperature
  • Supplied with 15 inch (24 AWG) wires and mounting clamp

Dimensions - SmartFan Wisp II Fan Speed Control

SmartFan Wisp II Fan Speed Control Probe

Specifications - SmartFan Wisp II Fan Speed Control

Part Number1 Type2 Supply Voltage Range Maximum Watts
to Fans3
Control Temperature Full Speed/Idle Speed Temperatures
018W135 Closed-Loop 11.5 to 30 VDC 20 Watts 35°C N/A
018W140 40°C
018W135P Open-Loop N/A 35°C / 23°C


1. Part numbers above are RoHS 5/6 (contains lead) compliant. For full 6/6 compliance add a "-F" suffix to the part number.

2. Closed-Loop models are best installed near the equipment exhaust; Open-Loop models at the air inlet.

3. Air temperature of 70 °C or less. Minimum air velocity of 200 ft/min or greater is required across the probe housing.
 

SmartFan Wisp II - your choice for small DC fan speed control and temperature control applications.



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