testo 6621-Humidity transmitter

Description

  • Duct version with
    display
  • Wall version with
    display
  • Highly accurate testo humidity sensor with long-term
    stability (±2.0% RH)
  • Optional 2-line LCD display
  • P2A software for parameterization, adjustment and analysis,
    saves time and costs in commissioning and maintenance
  • Optimum calibration concept thanks to adjustment of the
    entire signal chain (1-point, 2-point and analog adjustment)
  • Adjustment without dismantling the transmitter
  • 2 analog outputs (humidity/temperature), option of 1
    passive humidity and temperature analog output