The Winland HA4 Wired Humidity Alert Sensor monitors ambient room humidity from 5 to 95% RH with ±3.0% from 25 to 75% RH. Designed to work with Winland EnviroAlert 200, 400 and EnviroAlert Pro systems. Can be used in cold or freezing environments like walk-in freezers and food storage. Cables can be extended up to 1000' feet using standard 18-22 AWG twisted pair wiring. Winland HA-4 Specs • Sensor Humidity Range: 5 to 95% RH at 77 °F (25 °C)• Device Operating Temperature Range: –40 to +140 °F (-40 to +60 °C)• Power Requirements: 12~24V DC, 0.21W Max• Sensing Element: Capacitive / IC• Response Time: TC 12 minutes• Accuracy: ± 3% from 25 to 75% RH at 77 °F (25 °C)• Dimensions: 3.9” x 2.9” x 1.7” (9.9cm x 7.4cm x 4.3cm)• Weight: 5.3oz (150.0g)• Mounting: Surface mount
