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Key Features
- Humidity Sensor monitors for ambient room humidity from 5 to 95% RH
- Accurate within a 3% range from 25 to 75% relative humidity
- May be used in cooler / freezer environments
Key Features
- Humidity Sensor monitors for ambient room humidity from 5 to 95% RH
- Accurate within a 3% range from 25 to 75% relative humidity
- May be used in cooler / freezer environments
Key Features
- Humidity Sensor monitors for ambient room humidity from 5 to 95% RH
- Accurate within a 3% range from 25 to 75% relative humidity
- May be used in cooler / freezer environments

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Overview
Specifications
Documents
Product Overview
The HA-4 Winland Electronic Humidity Alert 4 is a humidity monitoring sensor designed to provide real-time alerts and accurate readings of ambient humidity within a single room. The Humidity Alert 4 is compatible with the EnviroAlert Professional Gateway, EnviroAlert 200 series, EnviroAlert 400 series, and EnviroAlert 800-IP series gateways. The sensor connects to a gateway via 18-22 AWG twisted pair up to 1,000' long.
Main Features
- Humidity Sensor monitors for ambient room humidity from 5 to 95% RH
- Accurate within a 3% range from 25 to 75% relative humidity
- May be used in cooler / freezer environments
- Maximum cable run of 1,000' (304.8m), 18-22 AWG twisted pair
General Information
Name: Winland HA-4 Humid Alert-4 Humidity Sensor
Category: Winland Electronics, Intrusion, Environmental Sensors, Humidity Sensors
UPC Code: 082075011709
Country of Origin: United States. Country of origin is subject to change.
Specifications
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ADI Part Number WI-HA4 Brand Name Winland Electronics Manufacturer Part Number HA-4 Product Line EnviroAlert, EnviroAlert Professional Product Type Wired Humidity Sensor
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Connectivity Technology Wired
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TAA Compliant No
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ADI Part Number Replaces WI-HAIIIPLUS Model Number Replaces HA-III+
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Form Factor Surface Mount, Wall Mount
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Environmental Certification PROP74, REACH, RoHS