| General Specifications | 
        
            | Model | 
        
            | 1550 | 1560 | 
        
            | Display Resolution | 0.01 m/s (@ range of 0 to 9.99m/s) 0.1 m/s (@ 10 m/s or more)
 0.1°C (Temperature)
 0.1% (Relative Humidity)
 | 
        
            | Number of module slots | 16 6
 | 
        
            | Analog output | 0 to 5 V (with optional module) | 
        
            | Interface | RS-232C | 
        
            | Operation Temperature | 41 to 104°F (5 to 40°C) with no condensation | 
        
            | Storage Temperature Range | 14 to 122°F (-10 to 50°C) with no condensation | 
        
            | Dimensions | 16.9″ x 19.6″ x 5.5″ (430 x 500 x 140 mm) 8.9″ x 12.8″ x 5.5″ (226 x 325 x 140mm)
 | 
        
            | Weight | 22lbs (10kg) 11lbs (5kg)
 | 
        
            | Power | AC 100V (50/60 Hz) | 
        
            | Warranty | 1 year | 
        
            | Standard Accessory | Meter, Operation manual, RS-232C cable, Power cord, Fuse | 
        
            | Option Probes | 
        
            | Air velocity probe specifications | 
        
            | Air Velocity | 
        
            | Ranges | 0.1 to 25.0 m/s 0.1 to 50.0 m/s
 | 
        
            | Accuracy | +/- (3% of READING +/- 0.1) m/s | 
        
            | Operating Temperature Range | -4 to 158°F (-20 to 70°C) with no condensation | 
        
            | Storage Temperature Range | 14 to 122°F (-10 to 50°C) with no condensation | 
        
            | Warranty | 1 year | 
        
            | Standard Accessory | Probe, Data ROM, NIST Certificate |