Tekmar Snow/Ice Sensor - 210ft (50m) cable. Snow/Ice Sensor 094 is an in ground sensor used with tekmar snow melting controls to automatically detect snow or ice on a driveway or walkway. 094 has 208 ft (64 m) of wire. This product can be used in applications ranging from residential driveways to commercial building fronts such as emergency access entries. This sensor allows tekmar snow melting controls to automatically operate snow/ice melt system only when snow or ice is present, while also providing temperature feedback to control.