MSC-1. This commercial grade, multi-sensor snow melting control is capable of monitoring snow and ice accumulation in three separate zones and sending independent control signals to each zone-for example, one signal for the sidewalk, one for the driveway, and one for the gutters and downspouts. The MSC-1 controller is housed in an enclosure suitable for commercial and industrial indoor applications (NEMA 4, 4X). It features an LCD display for programming and indicator lights for operation of each zone. The control signal relays operate external contactors. The MSC-1 controller is UL listed to US and Canadian safety Standards. The MSG-1 connection wire may be extended up to 500' with an appropriately rated 18-20AWG 3-wire unshielded stranded cable.