Cooling system temperature sensors monitor the temperature inside an AV rack or cabinet and send readings to a programmable controller, which can turn connected low-voltage fans on or off at selected temperature set points. Many controllers also support variable fan speeds, low-voltage triggers, digital temperature displays, and audible alarms for added monitoring and control.

Cooling system temperature sensors feed readings to a programmable controller, which can adjust low-voltage fan operation based on set temperature points and fan-speed settings. Low-voltage triggers can start fans when connected equipment turns on, while contact closures support on-and-off control and alarm signaling within compatible equipment control systems.

Single-zone cooling system temperature sensors monitor one AV equipment cooling zone and can control its connected low-voltage fans based on programmed temperature settings. Dual-zone systems monitor and manage two fan groups, which can help address separate rack or cabinet areas with different cooling needs.

Compare the form factor and mounting options, including compact shelf placement or included rack ears in a slender 1U design, along with whether the controller manages one or two sets of fans. Also review digital temperature displays with Fahrenheit or Celsius readings, programmable temperature set points, variable fan-speed control, low-voltage triggers, contact closures, and audible alarm outputs.