Lazy Daze Owners' Group

A lot of people use something like this water leak alarm.
There are dozens of styles so pick your favorite.

Glentronics, Inc. BWD-HWA Basement Watchdog Water Sensor and Alarm -...

I wedged it directly under the front of the pump and used Velcro to secure the alarm unit near the pump location.
Once it told me there was a small leak.
Well worth a few bucks to me.

Hi Larry;  I was looking to order this time delay relay to run the water pump from remote locations, and have it shut off automatically. But it appears that this relay starts a delay to come on at a later time.  The Hella 996152151 is a "Delay, On Time control relay. Confusing!   I think it needs a word added. "The" added between Delay and ON, would do a better job of describing what this relay does. It 'delays the On Time...'  would do a better job of describing the relay's function.    I admit that it might have a contact pair that switches when operated by push button, 'The remote water pump on'  and at the end of the (we'll just say) 15 minute (adjustable) delay goes on, and opens the contact, shutting the pump off. But the relay would draw power the entire time the pump was off.   An example given in  question and answer:   (I edited it)
      Question:Can you use this to turn off lights after you lock and leave your car? e.g. Lights you forget to turn off.
                               No you need the delay off relay........ this relay has a delay when power is applied, before it turns on!
                               By Mark Williams on June 29, 2015
      So for a water pump you want on immediately, to use, that would go off by itself some time later, this isn't it.

      The other part that Amazon offered differs by one number  Amazon.com: HELLA 996152131 12V Delay-On-Release, Time Delay Relay: Automotive    This is a #...131, instead of the #...151. This is labeled  "Delay On Release.  I think this is the part you would need. The remote on button(s) would energize the relay and turn on the pump right away. 15 minutes (or so) later, the relay would turn off, and the water pump would be off.  Described as: 996152131 12V Delay-On-Release, Time Delay Relay.  I think it should be better described as "On, with a delayed Off"   time delay relay.  I'm interpreting 'Release' as 'stays on after the on button is released".
      An example given in question and answer: (again I edited for clarity)
      "The Hella 996152131 Delay on-release timer relay worked like it should, deactivates pin 87 after X seconds. The application I used was for heated mirrors....
The function of this relay is delay on-release, meaning once the timer is triggered (power applied then released), the 87 pin will stay energized until the relay times out. If you trigger the timer again, the timer resets to 0 and keeps 87 energized for the set time. (extending the on time) If you need to deenergize before the timer ends, add a switch to the ground of the relay, this will cut the coil power and deactivate the timer.  A pin out:
           15  is the 12V trigger,
           30 is the 12V constant power (house battery)
           31 - ground
           87 -   NO 12V output when delay is active, off after delay times out   (NO is normally open)
           87a - NC 12V output (off when timer active, on when deactivated)     (NC is normally closed)
                       "87a would be unused in the water pump application."
  
   This last comment brings up the question, 'what if you want to turn off the pump before the timer shuts it off.'  I would put an off switch to turn off the relay early at the control switch on the Lazy Daze normal pump switch location.
   In addition, green LED lights, could be routed to each location of an on switch. This would tell you if the pump was already on from a previous press of a remote. For example in a MidBath, 'ON' switches would be right at the shower, reachable from the shower. The sink location in the bath. At the normal control location in the kitchen, and a remote outside at the external shower on the driver side.
   For those of you readers who got this far, let me know if you concur that the    "Hella 996152131 Delay on-release timer"  is the right part to order.   I'm hoping that the people answering these questions, had an actual part(relay), to verify that it acted as they described.      I'm going to go look at Hella to see if they have a schematic. The German translators must have had a time with this part's operation!     I'm not actually doing this for my rig, Asking for a friend.     RonB