- Resource Center
- GraceSense™ - Hot Spot Monitor (HSM)
- Medium Voltage Hot Spot Monitor FAQ
Q: What do the LEDs on each temperature channel indicate?
A: In order to read the proper temperature, there must be adequate fiber power for each channel. A green LED means status OK, while a red LED indicates a failed status. Fail status occurs when the fiber is damaged, there are an excessive number of bends, or is installed with a bend radius less than 0.5”.