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Sensor Type
Water Leak / Flood
Contact Closure / Relay
Ease of Installation
Beginner (Installs < 10 minutes)
United Security
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Simple, Effective Water Level Detector
United Security Products WLS Water Level Sensor
United Security Products WLS Water Level Sensor
United Security Products WLS Water Level Sensor
Item# 79633
Price: Normally $24.00 
Hot Deal $11.81
Free shipping on orders over $50 - See Details


  • Detects presence or absence of water - monitor for floods or leaks
  • NO/NC capability
  • Easily connects to voice dialers

Essential Info

The United Security Products WLS is a simple sensor that can help you avoid disaster in your home. This NO/NC capable sensor can be set to activate in either the presence or absence of water, meaning you can set it to detect both floods and leaks before they become out of hand. This unit easily installs with voice dialers - just connect the wires!


Important notes:
Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
Manufacturer contact information: United Security Products Inc / Emer Call, Tel: (858) 413-0149


13 Ratings
5 star: 31%  (4)
4 star: 15%  (2)
3 star: 23%  (3)
2 star: 0%  (0)
1 star: 31%  (4)
Average Customer Rating
(13 customer ratings)
Share your thoughts with other customers
PETER -- natick, MA   6/9/2013
I bought this basic sensor to use with my Elk M1G. The sensor itself looks decent enough but there is no documentation that I can find on how to hook it up to an Elk zone.
NEIL -- newton, MA   12/10/2012
C'mon, $13 for a plastic block with two screws and a wire?
ROBERT -- lake havasu city, AZ   8/31/2012
I bought this to operate a fill system for a water storage tank. Fiddled with it for 2 weeks before I took the sensor to a glass of water in the house. Dipped it in the water and the light illuminates but did not trigger the I/O Linc sensor interface. Hope people do not buy this expecting they will be protected from a flood situation only to find out it didn't work.
Paul -- toronto, ON   4/10/2012
Hooked it up to a Trigger Linc - Works well, but recommend attaching metal feet to the terminals small piece of copper to help ensure good connectivity. Lead wire could be a bit longer and slightly larger gauge
JAROSLAW -- east hampton, CT   4/9/2012
awsome, trigs the old x10 tripple input unit
PATRICK -- winnipeg, MB   4/1/2012
Great product and works as expected. The leads could be a lot longer but its not a big problem. I have noticed that the pricing of this product has increased dramatically since I last purchased it a few months ago. I would suggest that SmartHome consider lowering the price back to where it was. There isn't a lot to this device so the increased price is NOT reflective of the over all value. Teken
C P -- altadena, CA   1/18/2012
Works well with the Triggerlinc. I will be using this as a water level trigger.
BOBBIE -- lake havasu city, AZ   1/13/2012
Haven't yet tried it.
GERALD -- san diego, CA   9/23/2011
Hooked this sensor up to an Insteon I/O linc unit and once I got the polarity right, it activates my I/O linc when water is present.
NATHAN -- liverpool, NY   4/11/2011
Unable to get to work normally open, too expensive to ship back for RMA.
NITRO NETWORKS, -- portsmouth, NH   3/8/2011
Great product, thanks Smarthome.

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