Network ETI Snow Switch SEM-1

Installed between a snow and ice melting control and connected aerial, gutter, and/or pavement sensors, the Snow Switch brand SEM–1 sensor expansion module provides enhanced monitoring of each sensor used in a snow and ice melting system. The SEM–1 provides an indication that each sensor is energized (power/green LED) and which sensor(s) is signaling a call for heat (snow/yellow LED). Using a SEM–1 sensor expansion module, a faulty sensor is quickly identified. Troubleshooting and repairs can be made to a damaged sensor while the remainder of the system continues normal operation. By encouraging system installers to run a separate cable between each sensor location and an SEM–1 it is far easier to trace wiring faults than when multiple sensors are parallel connected in one or more junction boxes that are often hard to locate.