Temperature Measurement/Operating Range: -40 º C to +60 º C (-40 º F to +140 º F) (NIST traceable if ordered with certificate)
    Temperature Resolution or precision: 0.1 º C (0.18 º F) and 0.5 º C (0.9 º F)
    Temperature Accuracy: +/- 0.5 º C (+/- 0.9 º F) over 0 º C to +60 º C (32 º to 140 º F) and +/- 1 º C (1.8 º F) over remainder of temperature range
    Relative Humidity Measurement Range: 0 to 100 % RH (NIST Traceable)
    Relative Humidity Longterm Operating Range: < 90 % RH (non-condensating)
    Relative Humidity Resolution or precision: 0.1 % RH and 1 % RH
    Relative Humidity Accuracy: +/- 3 % RH between 10 % RH to 90 % RH and +/- 5 % RH below 10 % RH and above 90 % RH
    Relative Humidity Long Term Stability: < 1 % RH/year
    Maximum measurement rate: one reading every second
    Housing Dimensions: 8 cm (3.1") x 4 cm (1.6") x 2 cm (0.8")
    Housing Material: injection molded ABS thermoplastic
    Housing Colour: light gray
    Sensor type: semiconductor
    Communications cable: integrated 6 m (20 ft.) cable with DB-9F (female) mini D-SUB connector
    Power source: Port-powered (RTS and or DTR, asserted)
    Power supply current drain:  2 mA average, 6 mA maximum when port powered (5V RS232)
    Communications Interface: RS232C using TX,RX,RTS,DTR and GND. One device per serial port.
    Maximum extension cable length: 305 m (1000 ft.) using recommended cable type. Low capacitance shielded cable or UTP is recommended.
    Firmware Version: 5.00
    Communications Protocol: Sensorsoft Device Protocol Version 2.1
    Error control: 16 bit CRC (cyclic redundancy checking) for detection of communication errors between the device and host.