this drives me nuts. 2009 Lazzara 84 This little, lonely Rule 2000 is that tiny little sump is the only bilge pump Lazzara felt was necessary in the Lazarette. Even though they installed high water alarms in the other bilges, I guess they believed rudder glands never leak and shower sumps never fail There is a pick up for the emergency high capacity Hail Mary 240v crash pump but other wise no back up. Note how small the sump is... so you must have a check valve otherwise the pump cycles non stop as the **** sump holds about as much water as the hose! I hate check valves. This ridiculously stupid set up has cost us a $650 motor for the master and crew head transfer pump... you can see it sits just 2" over the bottom of the "bilge". Luckily it happened here in Miami with nobody on board. Imagine having to tell owners or charter guests while in the Bahamas "sorry you cant use the master head" Now to add a high water alarm, I can run new wires to the nearest ISIS box but then would have to get someone reprogram the ISIS system to include the new alarm... or I can hook it up to the nearby ER high water switch .... and as bonus a previous captain had butchered the bilge pump wiring and left it hanging on the floor of the lazarette hidden behind the transfer pump. Neither I in over a year or the surveyor could see it.