EXTECH RH 350( PSYCHROMETER, DATA LOGGER DIGITAL)

Superheat differential measurements: T1-T2, Air-T1, T1-Dewpoint
Dual Type K external temperature probe input
Simultaneous display of % RH, Temperature and Dew point or Wet Bulb or External Probe Temperatures
Built-in RS-232 interface ( optional RS-232 cable) – uses Windows® Hyperterminal to download data to a PC
Memory stores up to 99 data records
Complete with two Type K bead wire temperature probes and 4 AAA batteries