Specifications

• Air Duct Velocity
  100 to 4000 ft./min. (0.5 to 20.32 m/sec)
• Alarm auxiliary contacts DPDT
  10A @ 30 VDC (resistive); 10A @ 250 VAC (resistive);
  1/2 HP @ 240 VAC ; 1/4 HP @ 120 VAC​
• Alarm Current:
  65 mA @ 24VDC 135 mA RMS @ 24VAC 60Hz 35 mA RMS @ 120VAC 60Hz
• Alarm Initiation Contacts
  2.0A @ 30 VDC (resistive)
• Alarm Response Time
  15 sec.
• Dimensions
  Rectangular: 14.38 in (37 cm) L; 5 in (12.74 cm) W; 2.5 in (6.36 cm) D
  Square: 7.75 in (19.7 cm) L; 9 in (22.9 cm) W; 2.5 in (6.36 cm) D​
• Input Capacitance
  270 μF max.
• Operating Humidity Range
  0% to 95% relative humidity non-condensing
• Operating Temperature Range
  -4°F to 158°F (-20°C to 70°C)
• Power Supply Voltage
  20-29 VDC; 24 VAC, 50-60 Hz; 120 VAC 50-60 Hz
• Power Up Time
  35 sec. max.
• Reset Time by Power Down
  0.6 sec. max.
• Reset Time w RTS451
  0.03 to 0.3 sec.
• Reset Voltage
  3.0 VDC min.; 2.0 VAC min.; 10 VAC min.
• Shipping Weight
  2.5 lbs. (1.14 kg)
• Standby Current
  21 mA @ 24VDC 65 mA RMS @ 24VAC 60Hz 20 mA RMS @ 120VAC 60Hz
• Storage Temperature
  -22°F to 158°F (-30°C to 70°C)
• Voltage Range
  20-29 VDC; 24 VAC 50-60 Hz; 120 VAC 50-60 Hz
• Wiring
  4-wire