Rollover image above to zoom

Water Detector - SPDT

Price: $249.45
Excl. Shipping
(See Product Details Below for Manufacturers Part Numbers)
Discount Shipping

Our volume UPS discounts are passed-on directly to you for the lowest possible shipping rates.

Manufacturer: Johnson Controls


Category: Hydronic Controls



The WD-1B Water Detector features gold-plated probes
and microchip technology for dependable detection of
conductive liquids. The WD-1B can be operated from 11
to 27 volts AC or DC. For application flexibility, SPDT
contacts are provided to connect to a monitoring system.
A height adjustable, cast aluminum, weatherproof enclosure
is standard. A green LED visible outside the box
indicates power. A red LED indicates water detected.


• Weatherproof enclosure

• Easy to install

• SPDT alarm contacts

• 11 to 27 VAC or VDC

• Reliable operation

• LED's for power and alarm indication

• Adjustable detection level


The WD-1B can be used with any “contact-closure” monitoring
panel. The SPDT contacts may be wired

Normally-Open or Normally-Closed, allowing wiring flexibility
to handle most installations.


Secure by applying a silicone adhesive to the mounting
feet, and placing the sensor in the area to be protected.

For more permanent installations, fasten the sensor using
the 0.19" holes provided in the mounting feet with #6 or

#8 screws. The legs are adjustable (1.5") for precise water
level signaling.

Replaces Part Numbers: WD-1B, CARWD-1B


I called trying to find out what happened to the rest of my order and was surprised to hear a warm and kind voice willing to do whatever it takes to find answers and follow through with her promise. Amanda is an asset worth holding on to and a credit to your company. She was very professional, helpful and courteous while assisting me with my order. I would most definitely assign her an A+ in customer service."
Donald "Brad" Thomas

I would like to thank you for your hard work in getting us our part in a timely fashion. You were very helpful and you understood the severity of the situation and did a wonderful job in getting the part to us. Thanks again and please share this with your boss! You were outstanding!"
Todd Mills

Share This:
Have Questions?
Our parts Experts are happy to help!

Available Monday to Friday 10am - 6:30pm EST
Email our Parts Experts
Accredited BusinessGo
Amanda I want to thank you, the blower fan work perfectly. Thank you so very much."
Bill K Roberts
Amanda, Thank you very much again, I have been looking for this part for about two weeks and getting very frustrated in the process of the search, you were very helpful!!"
Ken Holm
Why Buy From Us?
110% Lowest Price Guarantee
Over 500,000 Parts in Stock
Same Day Shipping on Orders Received Before 3pm EST (Mon-Fri)
Nationwide Distribution Centers for Fast Delivery
Choose from UPS Next-Day, 2-Day, 3-Day and Ground Service
We Supply Retail and Wholesale
Order from us.
Risk Free, with
Our Triple Guarantee
Guarantee 1
No hassle, 30-day returns policy
Guarantee 2
110% Lowest price guarantee
Guarantee 3
90-day warranty
Sign up for Special Offers Directly from | 1042 N. Mountain Ave., #B546 | Upland, CA 91786
© 2003-2018 All Rights Reserved.