Winland HA-4 - Product Guide, 11/23

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Electronic Humidity Sensor
This Package Contains:

• 1 HA-4
• 1 Moun�ng Kit (2 screws and 2 anchors)

• 1 Product Guide
Features:

• Monitors for the ambient room humidity from 5 to 95% RH with
±3% accuracy between 25 to 75% RH

• May be used in cooler/freezer environments

• Maximum cable run of 1,000’ (304.8m) [18-22 AWG twisted pair]
Note:

• To clean the outside of the HA-4,
use a so� dry cloth. Do NOT use liquid cleaners, solvents,

abrasive cleaners, or compressed air.
• Do NOT open product enclosure, it will void warranty.

• For Winland enviromental compliance please visit:
h�p://environmental-compliance.winland.com/
• Test device weekly to ensure proper opera�on.
Specifica�ons:
Environmental Condi�ons:
• Overvoltage category OVC I
• Pollu�on degree 2
• Ingress Protec�on IP21
Power Re
q
uir ements

12
V

D
C or 24
V

D
C, 0.21W

Max

Se
nsin
g
Ele ment

Cap
ac i
�
ve /
I
C

Se
nsin
g
Ran
g
e

5 to 95% RH at 77 °F (25 °C)

Accurac y

±3% ac curac y between 25 to 75% RH at 77 °F (25 °C)

Response Tim
e

TC < 12 minutes

O
pera
�
n
g
Temperature
-
40 to +140 °F (
-
40 to +60 °C
)


I
ndoor

use only

Wei
g
h
t

5.3oz (150.0
g
)

D
im
ensions

3.9
”

x 2.9
”

x 1.7
”

(
9.9cm x 7.4cm x 4.3cm
)

Moun
�
n
g

Su
rfac e mount

Cas e Material

A
BS

General Informa�on:
The Winland HA-4 is a sensor used for monitoring remote loca�ons for rising or falling rates of humidity. The
HA-4 is designed and approved to be used with the EnviroAlert and EnviroAlert Professional families of
monitoring devices including the EA200-12/24, EA400-12/24, EA800-IP, and the EA
Pro
-GTWY.
Theory of Opera�on:
The HA-4 senses the ambient room humidity electronically using a capaci�ve sensing element. Humidity should
be expected to vary from room to room and from one area of a room to another. Ven�la�on and airflow will
greatly affect rela�ve humidity.
When programming the HA-4 sensor on the monitoring device, the ini�al reading you receive should be
considered a base reading. Allow at least 30 minutes of opera�on for the sensor to stabilize prior to se�ng
the high and low limits. It is necessary for the temperature of the sensor to stabilize before the readings are
considered accurate. The outputs of Winland’s electronic monitoring devices react within seconds of a limit
being exceeded. A sudden burst of humid air from a door opening or a ven�la�on system star�ng, could cause
a brief change in the humidity reading. To avoid false alarms, a �me delay should be programmed into the
EA200-12/24, EA400-12/24, EA800-IP, and the EA
Pro
-GTWY. It is strongly recommended to u�lize a �me
delay unless your applica�on requires instant no�fica�on.
Installa�on:
The HA-4 sensor should be flush mounted directly to a flat surface like a wall. The sensor should be located in
an area free from dra�s, heat sources, and direct sunlight. It is recommended that the sensor is mounted at a
height of 4 to 5’ (1.2 to 1.5m) from the floor.
Wire the HA-4 to your EA200-12/24, EA400-12/24, EA800-IP or EA
Pro
-GTWY monitoring device using the
following wiring scheme (See Figures 2 and 3). Extend the length of the probe wiring up to 1,000’ (304.8m)
using 18-22 AWG twisted pair.
(Sh
o
ws t
ypical use with an
E
A200-12/24 and EA400-12/24 devic
e)
Blue
Red Wire = POSITIVE
Black Wire = NEGATIVE
Blue Wire = Wire to NEGATIVE (-) terminal on sensor input of desired device:

EA200-12/24, EA400-12/24, EA800-IP, or EAPro-GTWY
(see figure 2 & 3)

Sensor Input POSITIVE (+) is not used.
OUT #1
INPUT #4
INPUT #3
INPUT #2
INPUT #1
OUT #1
OUT #1
OUT #1
OUT #1
PWR ON
PWR OUT
(-) (+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
PWR IN
(+) (-)
Blue
®
®
Figure 2
Figure 3




WARRANTY AND SERVICE INFORMATION
Winland Electronics, Inc. (”Winland”) warrants to the original purchaser from Winland that each product of
Winland’s that it manufactures shall be free from defects in material and factory workmanship for a period
of one (1) year from the date of purchase, when properly installed and operated under normal condi�ons
according to Winland’s instruc�on.
Winland’s obliga�on under this limited warranty is limited to correc�ng the product without charge, at its
factory any part or parts thereof which are returned, transporta�on charges prepaid, to the factory within
one year of the date of purchase subject to Winland’s examina�on showing to Winland’s sa�sfac�on to be
covered by this warranty.
Product returns will not be accepted unless a Return Material Authoriza�on has been issued by Winland,
which is subject to purchaser’s iden�fica�on of the purchase order number and product serial number.
UNAUTHORIZED RETURN SHIPMENT OR SHIPMENT CONTRARY TO WINLAND’S WRITTEN INSTRUCTIONS
WILL VOID THIS LIMITED WARRANTY. Correc�on of such defects by repair, replacement, or refund of the
amount paid for the product, at Winland’s op�on, shall cons�tute fulfillment of all Winland’s obliga�ons
under this limited warranty. Repaired and replacement parts will be warranted for the remainder of the
original product warranty. Repairs not covered by this limited warranty may be offered by Winland for a
charge.
This limited warranty shall not apply to any of Winland’s products which have been subject to misuse,
negligence, accident, or which have been repaired or altered outside of Winland’s factory.
THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING,
WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSES,
NON-INFRINGEMENT, DESIGN, AND TITLE, AND ANY WARRANTIES ARISING FROM COURSE OF DEALING,
USAGE OF TRADE OR OTHERWISE. ALL OTHER REPRESENTATIONS MADE TO THE END USER/PURCHASER
BY ANY OTHER PARTY ARE EXCLUDED. No person, agent or dealer is authorized to give warran�es on behalf
of Winland nor to assume for Winland any other liability in connec�on with any Winland product.
WINLAND SHALL NOT BE LIABLE TO ANY PERSON FOR INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OF ANY DESCRIPTION, WHETHER ARISING OUT OF WARRANTY OR OTHER CONTRACT, NEGLIGENCE,
OTHER TORT, STRICT LIABILITY OR OTHERWISE. Under no circumstances shall Winland’s liability under this
limited warranty exceed the purchase price paid by the end user/purchaser for the product. The par�es
agree that the limita�on of remedies in this document is an agreed upon alloca�on of risk and does not
cause the remedy to fail of its essen�al purpose.



Radio
Frequenc
y In
ter fer
enc
e Requir
eme
nts:
This devi
ce c
omplies with
Par t 15 of
the F
CC Rule
s. O
per
a
�on is subje
ct t o the foll
owing t
wo c
ondi�ons: (1)
This
devi
ce m
ay not cause harmful i
nterfer
enc
e, and (2) this devi
ce must accept an
y
i
nter fer
enc
e r
ec
eiv
ed
, including i
nter fer
enc
e tha
t ma
y cause undesi
red oper
a
�on.