Inquiry (采购产品): Low Water Tank Alert I am iquiring about a low water level alarm with audible, visual alert as well as capability to signal either a computer or security system. This is for a house water system using a 5000 gallon water holding tank. I would like to use a float switch mounted in the tank and place the unit in the mechanical room of this house.Power avaible is 110 Volts or 230 Volts. **** Hidden Message ***** Rick Holub 81601 Company: J & M Pump Inc E-mail: jandmpump@aol.com **** Hidden Message ***** jandmpump@aol.com