Winland Electronics WaterBug WB350 User manual

Electronic Water Detection Device
SPECIFICATIONS
Power Requirement 9VDC via alkaline battery @ 40µA (resting)
Sensitivity Will not alarm due to high humidity or condensation.
Battery Life One to two years (not included)
OperatingTemp 32˚ to 140˚F (0˚ to 60˚C); non-condensing environment (indoor use only)
Output Open-collector output
25mA max collector current
30 VDC max on trip line
Buzzer (Integrated) 83 dB @ 30 cm @ 9VDC, pulsed
Probe Options Includes 1 Standard Unsupervised Surface Probe (W-S-U)
Accepts up to 6W-S-U wired in parallel
Max Cable Length 1-2 probes; max recommended distance of 200’(61 m)
3-6 probes; max recommended distance of 100’(30.5 m)
Probe Cable Probes include 15”(4.6 m) cable. Extend using 22-18 AWG twisted pair.
ConsoleWeight 14 oz (0.40 kg)
Console Dimensions 5 x 2.44 x 1.25”(12.7 x 6.2 x 3.18 cm)
Probe Dimensions Surface: 2 x 3 x 0.88”(5.1 x 7.6 x 2.2 cm)
Mounting Key slot
Case Material ABS
Warranty 1 Year Limited
CONTENTS
This package contains:
• 1 WB350
• 1 Surface Probe - Unsupervised (W-S-U)
• 1 Installation/Operating Instructions Guide
WB350
© 2021 Winland Electronics, Inc.
D-011-0002 Rev E (05/2021)
Tech Support 8:00am - 5:00pm Central Time
(800) 635-4269
www.winland.com

INTRODUCTION
Thank you for your purchase of the Winland WaterBug modelWB350. TheWaterBug is completely electronic and is designed
to detect water only (distilled and deionized water cannot be detected). For proper operation this unit must be used in
conjunction with an alarm system, wireless transmitter, etc. It is designed so the control console mounts on a wall or other
flat vertical surface and the remote probes are placed in the locations where water leakage is most probable. Up to six
remote probes may be connected to one control console. A film of moisture forming a bridge between the two metallic
contacts on any remote probe is all that is needed for the unit to signal an alarm condition.
The output on theWB350 is non-latching, but will remain closed until the moisture bridge is broken. As sensitive as the
WaterBug® is, it will not alarm due to high humidity or condensation.The WaterBug® is ideal for use in homes, oces,
computer rooms, boats, etc. Several consoles may be wired together to monitor an entire complex.
LOW BATTERY INDICATION: TheWB350 will trip the open collector output and give an audible warning if battery voltage
runs low.
INSTALLATION
Locate the area where theWaterBug® console is to be mounted. Mark
the position of the screw hole on the mounting surface. Drive the
mounting screw into the wall allowing 3/16”between the screw head
and the wall. Engage the key slot on the back of the console and the
screw head and press down.
Multiple probes must be hooked up in parallel to terminals S and S. See
Figure 1.The remote surface probes may be mounted securely to the
floor or a wall. See Figure 2 and Figure 3.
Mounting the probe(s) to a vertical surface like a wall enables you to
monitor an area for rising water levels. This is useful in basement sump
pumps and other types of water storage and drainage systems.
Note: WB350 is equipped with an onboard buzzer for local
annunciation and low battery warning.
TERMINAL BLOCK CONNECTIONS
TheWB350 is powered by one 9-volt alkaline battery.To install the
battery, loosen and remove the four corner screws. Insert the new
battery and retighten the four corner screws. The WB350 can be used
in conjunction with virtually any type of wireless transmitter if any
one of the remote probes detects water. When connecting the unit to a
wireless transmitter, wire the N.O. terminal and C terminals to the input
of the wireless transmitter. If your initial wiring activates the wireless
transmitter when no moisture is present, reverse the leads on N.O. and
C on the unit.
Common (-)
Trip (+)
Not used
Not used
Figure 1

TEST PROCEDURES
To test the unit’s operational status, form a water bridge between the two metallic contact points (See Figure 2) with a
moistened finger or cloth. If working properly, the console will give an audible warning and activate a connected warning
device within approximately three seconds.The unit will reset automatically when the probe dries and there is no longer a
water bridge between the two metallic contact points.
Standard Surface Probe
If a remote probe is to be bolted down in a permanent installation,
drill only in the innermost center recessed area (See Figure 3). Drilling
anywhere other than the innermost circle may damage to the internal
wiring may occur, causing the unit to fail.
MONITORING FOR THE ABSENCE OF WATER
TheWaterBug® model WB350 should not be used to monitor for the
absence of water as doing so will significantly reduce battery life.
Note: Use theWB200 (hardwire version) when monitoring for the
absence of water.
WATER
WATER
WATER
WATER
Figure 2
ALARM NO ALARM
Four Probe Contacts
Mount the probe to ensure
these four stainless steel
contacts are against the
surface to be monitored.
Figure 3
Drill only in the
innermost area.
To insure proper operation, test weekly.
Concrete can be semi-conductive. If
experiencing false alarms, insulate
all probes mounted on concrete.

PRODUCT AND ACCESSORY GUIDE
W-S-S (Water Probe, Surface, Supervised)
The supervised surface probe can be connected to the EnviroAlert products as well as the WB800. The alarm will be
activated if water is present as well as if the cable is cut.
W-S-U (Water Probe, Surface, Unsupervised)
The standard surface probe is unsupervised and can be connected to the full line of WaterBug products. No alarm will
sound if the cable is cut.
ONE YEAR LIMITED WARRANTY
Winland Electronics, Inc. (“Winland”) warrants to the end user/purchaser that each product of its manufacture shall be free from defects in material
and factory workmanship for a period of one year from the date of purchase, when properly installed and operated under normal conditions according
to Winland’s instruction.
Winland’s obligation under this warranty is limited to correcting, without charge, at its factory any part or parts thereof which shall be returned to the
factory, by the original purchaser, transportation charges prepaid, within one year of the date of purchase and which upon examination, shall disclose
to Winland’s satisfaction to have been originally defective. Correction of such defects by repair to, or supplying replacements for, defective parts shall
constitute fulfillment of all Winland’s obligations to purchaser under this limited warranty. Repair service performed by Winland after one year from
date of purchase will be for a reasonable service charge.
This limited warranty shall not apply to any of Winland’s products which have been subject to misuse, negligence or accident or which have been
repaired or altered outside of Winland’s factory.The warranty is void if the Product’s housing or cover is removed.
Winland shall not be liable for loss, damage or expense resulting, directly or indirectly, from the use of its products or any other cause.
This warranty shall be null and void in its entirety if: (i) the product is altered or modified in any way that is not consistent with the manufacturer’s
instructions, or (ii) the product is used with or connected to a device: (a) that such product is not intended to be used with or connected to, (b) is not
otherwise consistent with the manufacturer’s instructions, or (c) is not otherwise approved by the manufacturer.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSES, NON-INFRINGEMENT AND TITLE, AND ANYWARRANTIES ARISING FROM COURSE OF DEALING,
USAGE OFTRADE OR OTHERWISE. ALL OTHER REPRESENTATIONS MADE TOTHE END USER/PURCHASER BY ANY OTHER PARTY ARE ALSO EXCLUDED.
WINLAND SHALL NOT BE LIABLETO ANY PERSON FOR INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY DESCRIPTION, WHETHER
ARISING OUT OF WARRANTY OR OTHER CONTRACT, NEGLIGENCE OR OTHER TORT, OR OTHERWISE. Under no circumstances shallWinland’s liability under
this limited warranty exceed the purchase price paid by the end user/purchaser for the product.
No person, agent or dealer is authorized to give warranties on behalf of Winland nor to assume for Winland any other liability in connection with
any of its products.
EA200-12
EA200-24 EA400-12
EA400-24 EA800-ip WB200 WB350 WB800
W-S-S W-S-S W-S-S W-S-S
W-S-U W-S-U W-S-U
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