Description
The Honeywell TR21 is a remote temperature sensor wall module that has a resistance of 20K Ohms. It is part of a family of wall modules that can be used with various Honeywell controllers, including the Excel 600, 500, 100, and 80 controllers, as well as the W7750, W7751A, W7752, W7753, W7761, and Spyder Unitary Controllers.
The TR21, TR22, TR23, and TR24 are a family of direct wired wall modules for use with Honeywell Excel 600, 500, 100, and 80 controllers; Excel 10 W7750, W7751A, W7752, and W7753 controllers; W7761 Controller; and Spyder Unitary Controllers.
Related Products
