You are bidding on (1) NEW Elmwood 2450 Thermal Sensor, these are NORMALLY OPEN.  The part number is 2450 87-265 F131.  They close at roughly 55°C.  We have been unable to find a data sheet for this particular sensor, but we do know it was used in the Hafler DH500, P500, and XL600 audio amplifiers as a thermal switch to increase the speed of a cooling fan when the amplifier temperature got hot enough; so it's NORMALLY OPEN (we verified that it is) and then closes when it gets hot enough (roughly 55°C), in the Hafler case, increasing the fan speed by bypassing a resistor.  Hopefully that gives a general idea of it's temperature operation.  In case it helps, this sensor goes by the Hafler part numbers SWH-119 or SF025; both are the same sensor.  If anyone has any specific information on this Elmwood Sensor, or a data sheet, please drop us a note so we can add the information to the listing to help others find the part they need.  Thanks for looking at our listing and be sure to check out our other listings and auctions for other items of interest.

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