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Extech RH-350 and RH-355 Kit
SuperHeat Psychrometer

Superheat differential measurements:
T1-T2, Air-T1, T1-Dewpoint
Dual Type K external temperature probe inputs (T1, T2)
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
Retrieve Max/Min readings with data and time
plus Average function
Real time clock
Triple display with backlighting
Unique sensor cap design twists to closed
position for protection during storage
Switchable °F/°C temperature units with 0.1° resolution
Data Hold freezes current reading on display
Auto power off to save battery life
RH355 kit includes RH350, 33% and 75%
calibration bottles, PC cable, and carrying case

Ordering Information
Model	Description	Buy Online	Price
RH350	Extech RH350 SuperHeat Psychrometer		$139.99
RH350NIST	Extech RH350-NIST SuperHeat Psychrometer with NIST		$254.99
RH355	Extech RH355, PSYCHROMETER, DATALOGGER KIT	Discontinued
RH355NIST	Extech RH355-NIST, PSYCHROMETER KIT W/NIST	Discontinued
Included Accessories
	RH350 Includes: (2) Type K bead wire temperature probes (4) AAA batteries RH355 kit includes: (1) RH350 (1) PC cable (1) Carrying case (1) Set of 33% and 75% Calibration bottles	Included
Replacement Accessories
444703	Extech 444703 Humidity Solution 33% RH Calibration		$39.00
RH350CAL	Extech RH350-CAL, Humidity Solution Kit, 33% and 75%		$54.99