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Advanced LT Controller - On/Off & Variable Speed 1-TC-ALT
Advanced LT Controller - On/Off & Variable Speed
NEW - Replaces the TC-ALT
Retail Price: $55.00
Savings: $25.00
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Item Description
Manufacturer: Cool Components
Part#: TC-ALT

The TC-ALT provides automated on off and variable speed control based on temperature.  It also features an alarm and three selectable modes with different on/off setpoints.  The On setpoint for Mode 1 is 80F/27C, and is most appropriate for equipment room or closet applications. The setpoint for Mode 2 is 90F/32C, and is designed for cabinet, rack, and enclosure applications. Mode 3 is 100F/38C, and is also designed for cabinet, rack and enclosure applications but offers a higher setpoint for applications where the controllers sensor must be in close proximity to components or a higher temperature is simply desired. This mode is also ideal for two stage cooling applications when two controllers are used with one controller set on Mode 2 and another set on Mode 3.
For each Mode, the fan/s will turn on at 50% speed and will increase in speed in a linear progression until full speed is reached at ~10F above the On setpoint. As the system cools down the fan/s will slow down in a linear progression and ultimately turn off when the temperature drops ~3F/2C below the On setpoint.  The alarm is set at a fixed 115F/41C.

Another advantage of the unit is that it can be mounted most anywhere since it utilizes a remote sensor.  In even more extreme applications, the sensor can be extended to control remotely mounted fans in projector enclosures, ventilation applications, etc.


  • Microprocessor Controlled
  • On/Off Control Based on Temperature
  • Variable Speed Fan Control Based on Temperature
  • Fixed Setpoint Alarm to Protect Systems from Overheating
  • Sensor can be Extended for Remote Equipment Applications
  • Compact Size for Easy Placement
  • Mounting Flanges Make Installation Easy and Professional
  • Polarity Protected
Operating Modes
The unit features three selectable modes with different on/off set points. The setpoints are at 80F/27C, 90F/32C, and 100F/38C, and are identified by the number of beeps heard when depressing the mode button on the side of the unit. Mode 1: One Beep, Mode 2: Two Beeps, and Mode 3: Three Beeps.
  • Mode 1 - On at 80F and off at 77F
  • Mode 2 - On at 90F and off at 87F
  • Mode 3 - On at 100F and off at 97F
*** These are all fixed set points and progressions and cannot be changed ***
General Specifications
Dimensions:          3" W x 1 3/8" D x 3/4" H (76 x 35 x 19mm)
Compatibility:        All Cool Components Low Voltage Products
Construction:        Black ABS Plastic

Power Specifications

Important Note: This unit should only be used with regulated power supplies. If not using a regulated power supply and using an unregulated adjustable voltage power supply such as the PS-300 or PS-500, the power supply should then possibly require a setting of 9V, although this is not optimal. The issue is that often times unregulated power supplies will supply higher voltage when not under load or under a light load. Higher voltage will not damage the unit, it simply will not perform within the specifications.
Connection:          2-Pin FastWire Power System
                           (Ensure proper polarity - Tip to +)
Voltage:               12V DC
Current - Amp:       Amps (Max)
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