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Built-in Sensors
• Temperature: -22 to 185 °F (-30 to 85 °C), +/- 0.5 °C
• Humidity: 0 to 100%, +/- 2%
• Dewpoint: -22 to 185 °F (-30 to 85 °C)
• Output Relay: SPDT relay with 3 screw terminals (NC, NO, Com)
• Relay status LED (bi-color, green="on", red="off")
• Max switching capacity: DC, 60 V, 30 W; AC: 30 Vrms, 1 A
Remote Sensor Support
• Digital: 2 ports (connect up to 4 sensors using splitters)
• Analog: 4 inputs (dry-contact, 0-5 VDC)
Ports
• Inputs: 4 analog-input channels (8-position terminal block); 1 Digital Sensor Bus connection (1x 6P6C modular jack)
• Outputs: 1 dry-contact relay, SPDT (3-position terminal block)
• Ethernet: 10/100 Mbps, RJ-45 receptacle
Operations
• Analog Input voltage range: 0 ~ +5VDC
• Analog Input sampling rate (internal): 5 seconds (approx.)
• Analog Input sampling accuracy: ±2% (typ.)
• Log-Data Capacity: 1Mb (1024Kb)
• Log-Data Rate: (built-in sensors only): 20Kb/day (approx.)
• Relay contact ratings: 0.5A @ 60VDC; 1A @ 30VAC (rms)
• Maximum Digital Sensor Bus cable length: 600ft (182m)
• Operating Temperature Range: 0 ~ +70°C (-32 ~ +158°F)
Power
• WatchDog-100 unit: +6VDC, 140mA (0.84W) typ. (no xternalsensors, relay not used); 350mA (2.1W) max. (4x RTAFHD3 sensors & relay in use)
• AC Power Adapter: 100 ~ 240VAC, 50/60Hz (included w/unit)
Power indicator: Idle / Activity indicator
Physical
• Chassis: 1.6"H x 8.5"W x 2.5"D
• 19" rack-mount, 1-U space (using supplied brackets)