Mayfair Replacement Automatic Bilge Pump Float Switch by Johnson PumpThe Johnson Pump Automatic Bilge Pump Float Switch is constructed of ultrasonically sealed thermo-plastic housing. An anti-spike feature prevents rapid on-off cycling and turns on with an audible click before water can reach unacceptable levels. This bilge pump float switch turns on when the rolling steel ball changes the pressure on the micro-switch.This automatic bilge pump float switch is a direct replacement to older Mayfair float switch models.Features: Constructed Of Ultrasonically Sealed Thermo-Plastic Housing; Anti-Spike Feature That Prevents Rapid On-Off Cycling; Turns On When The Rolling Steel Ball Changes The Pressure On The Micro-Switch; Sealed Ceramic Switch; Attaches To Any Mayfair/Johnson Pump Bilge Pump Through The Clip On "T-Slot"; Can Be Used With 6, 12, 24, or 32V Systems; Specifications: Max Amp: 15 A; Voltage: 12V; Size: 3''L x 1-1/2''W x 3-1/4''H; Click to Download the Johnson Pump Automatic Bilge Pump Float Switch User Manual