On board temperature sensor on first zone, Second zone requires remote probe 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 Hi / Lo 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 Each Zone can be configured with: Display F deg, C deg, % (Humidity) or Water Drop icon Zone configuration retained in memory if power is lost Specifications: Dimensions: 6.0" x 4.75 x 1.25 Weight: .55 lb Lo & Hi Limit Adjust Range: -58 to 299° F Input Voltage: 12 VDC @ <120mA Remote sensor inputs: 1 On-Board sensor: 1 Unit Operating Range: +32 to 122° F Alarm Outputs: 2 - SPDT Relays (Configurable) Auxiliary Audible Alarm Output: 1 - SPDT Relays (Non-configurable) Case Material: ABS