Monitor four zones with any combination of a remote temperature, humidity or water sensing probe. If temperatures and humidity deviate from the preset limits or water forms a bridge between the contacts on the WaterBug® sensor the designated relay for each zone will activate an alarm, dialer, transmitter, etc. -Available in 12 and 24 volt models (EA400-12 and EA400-24) -Simultaneous operation of all four zones -Defrost time delay up to 120 minutes -Easy to read large LCD display -Eight event alarm memory with time and date -Auxiliary output relay for local audible alarm -Auxiliary alarm silence feature with 10 minute timer -Each zone has offset calibration adjustment -Temperature & humidity high/low set points -Output relays can be configured to be initially energized or de-energized -Tamper proof lock setting -Snap fit mounting base with main housing for easy access -Plug in terminal strip connectors for easier wire termination -Zones being monitored are displayed every few seconds -Display F°, C°, % (Humidity) or Water Drop icon -Zone configuration retained in memory if power is lost