The Winland EnviroAlert EA400 is a four-zone critical condition monitoring device supporting simultaneous operation of four external sensors for temperature, humidity, or water presence (sensors sold separately). It features an easy-to-read LCD display that flashes under an alarm condition, an 8-event incident memory with time and date, four zone-specific relays plus one auxiliary relay, and a programmable alarm time delay of up to 120 minutes to avoid nuisance alarms. Temperature and humidity high/low set points are configurable per zone, with an auxiliary alarm-silence function on a 10-minute timer. This model runs on 12VDC power, suited to larger installations needing more monitored zones than the 2-zone EA200 provides.
