Specifications
Cord Types and Lengths:

The controller power and socket cords are made of heavy duty, 18 gauge, water resistant, grounded cable. Each side is 36 inches.

The float switch cords are about 20 inches long.

Float Switch Type and Information: Float switches are saltwater safe. 1" wide, 2.25"tall and fit into 1.25" PVC surround. 1/8" npt threads. A 2" x 2.2" space is required for mounting.
Mount Information:

The mount which holds the switches is made from black plastic. 2" wide and 12" total length. The switches are held in place by two zip ties. In addition a nylon screw holds the mount secure to your tank.

Switching System Information: Switching system is done by a 10 Amp relay, allowing you to use a device rated up to 1200 watts.
Water Level Height: The water level is adjustable from 4" to 9" below sump lip depending on where you attach the switches to the mount using the provided zip ties.
Operation: The controller powers a device when the lower float switch senses that your tank water level is low. The device will be turned off when the lower float switch senses your water level is high. The top switch is a backup in case the bottom switch fails.
Double Switch Controller
with 0.5" Sump Mounting Bracket (fits tank thickness between 0" and 0.5").
  $51     

with 1" Sump Mounting Bracket (fits tank thickness between .25" and 1").
  $51     

with 1.5" Sump Mounting Bracket (fits tank thickness between .75" and 1.5").
  $51     

with 'Bend Your Own' Sump Mounting Bracket (see FAQ for instructions).
  $50     

without a mounting bracket.
  $46