I am selling a Dometic SeaLand multi-level tank monitor system blue, part # 319021009. This item is new in original packaging, comes as shown. This level tank monitor roughly measures 25" L x 1/2" D (fresh probe), 12 1/2" x 1/2 D (mid probe), 2 1/2" L x 1/2" D (empty probe), 3" L x 2 3/8" W (tank monitor, (4) 1/4" mounting holes, (1) gray (8) male pin connector, (1) gray (3) male pin connector, (4) silver screws, 3 1/4" diameter (tank monitor cover), (1) gray cable with (2) orange (4) female pin connectors, (1) orange (8) female pin connector, (1) black tinned wire, (1) red tinned wire, (1) white tinned wire, instructions included. Senses when a blackwater waste tank is empty, 1/4 or 1/2 full, and completely full. Semi-flexible, adjustable stems with float switches: One float activates a "Full" light when the liquid is within 2 inches (51 mm) of the top inside surface of the tank. For more information regarding this item contact a dealer in your area. (TMS / 165 A / 9105839) Shipping cost is for the continental United States only (lower 48 states). For shipping outside of this area please inquire about shipping before purchase.