Winland HA-4 Humid Alert-4 Humidity Sensor

Protect critical assets and maintain environmental control with the Winland Electronics HA-4 Humid Alert-4 humidity sensor. This wired humidity sensor delivers room-level monitoring and instant alerts to help prevent moisture-related failures in security, surveillance, IT and storage environments. The HA-4 measures 5–95% RH with industry-grade accuracy (within 3% from 25–75% RH) and operates on 12–24V DC, giving you dependable readings for HVAC, server cabinets, archives and cold storage. Its long wired connection support—up to 1,000' using 18–22 AWG twisted pair—allows flexible placement while maintaining robust connectivity to EnviroAlert Professional, EnviroAlert 200/400/800-IP gateways for centralized monitoring and event-driven notifications. Low power consumption and wall/surface-mount form factor simplify installation and reduce maintenance overhead. Ideal for integration into security and facility monitoring programs, the HA-4 provides the actionable humidity data you need to reduce downtime, protect equipment, and meet compliance requirements. Add the HA-4 to your EnviroAlert system or contact us for a quote and ensure continuous environmental oversight today.

• Continuous room-level humidity monitoring to protect sensitive equipment and inventory from moisture-related damage
• High accuracy (±3% between 25–75% RH) for reliable environmental control and compliance reporting
• Broad range monitoring (5–95% RH) and freezer-capable performance for diverse applications from server rooms to cold storage
• Long wired connectivity (up to 1,000' with 18–22 AWG) for flexible placement and easy integration into existing infrastructure
• Compatible with EnviroAlert gateways for real-time alerts and centralized environmental monitoring across security and facility systems