Fits models: N610, N611, N621, N622, N641, N642, NX611, NX641, NXA641, N811, N821, N822, N841, N842, N843, NX811, NX841, NXA841. Fits models: 962, 963, 9162, 9163, 9182, 9183, 2117,2118. Function: The thermistor keeps your refrigerator operating correctly by allowing the refrigerator to stay within a range of temperatures. The cooling cycle will turn on if the temperature rises too high. Installation: The thermistor assembly has a 4 prong connector that will snap into the light fixture located at the light bracket. The other end clips to the 10th fin from the right hand side. Thermistor Assembly with Wire Harness for Refrigerator models below Fits models:N610, N611, N621, N622, N641, N642, NX611, NX641, NXA641, N811, N821, N822, N841, N842, N843, NX811, NX841, NXA841,962, 963, 9162, 9163, 9182, 9183, 2117,2118 Cross reference:618548,621742 Colour:As Shown Material:ABS Package Contents: 1 x Thermistor Assembly with Wire Harness Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.