• Part Number: 6401-0504
• Detector: R404A Detector
• Infrared Refrigerant Gas Detector
• Long-life, proprietary infrared (NDIR) sensor
• No cross interference to other gases, humidity or temperature
• Modbus RTU interface, analog output, BAS/BMS system connectivity
• Set all parameters and outputs without opening the unit

• Sensor Channels: 1
• Measuring Range: 0 to 3,500 ppm
• Sensitivity / Minimum Detection Limit: 10 ppm
• Accuracy: +25% (Broadband Sensors) +5% (Gas-specific Sensors)
• Resolution: 1 ppm
• Enclosure Rating: General Purpose
• User Interface: 4-digit, 7-segment red/green LEDs; configuration push buttongs
• Power: 24 VDC +20% or 24 VAC +20%, 2.5W
• Analog Communications: 4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V, 2 to 10 V
• Digital Communications: Modbus RTU via RS 485
• Operating Voltage: 24 VDC or 24 VAC
• Relay Rating: 1 alarm relay, SPDT
• Wiring: 1 A @ 24 VDC, 0.25 A @ 240 VAC, resistive load
• Alarm: Integrated Audible / Visual Alarm
• Ambient Temperature: -22 to 104°F (-30 to 40°C)
• Humidity: 5 to 90 %RH, non condensing
• Altitude: 0 to 6,560 ft (2,000 m)
• Status Indicator: 4-digit, 7-segment red/green LEDs
• Buzzer Volume: 80 dB @ 10 cm
• Product Dimensions (L×W×H): 4.0” × 5.5” × 1.5” (100 × 140 × 40 mm)
• Product Weight: 6.3 oz (180 g)
• Sensor Type: NDIR
• Expected Sensor Service Life: 5 Years
• Approvals: CE, UL, CSA, IEC, EN 61010-1
• Warranty: 1 Year
• Country of Origin: United States

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• (1) Instruction Manual

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