- This is a replacement light tester. This light tester is included with every power unit (HR-P).
- The light tester connects to the output cord of your final mat in your system. It illuminates to tell you that the mats are all connected together properly.
- This part is not needed for entrance mats, HDM series.
4.5
21 ratings
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You will need one at the end of each group of mats
D
Dawn · January 20, 2026
The best snow melting mats! My beagle LOVES them too!