RS Components
Our website uses cookies and similar technologies to provide you with a better service while searching or placing an order, for analytical purposes and to personalise our advertising to you.

Testo Testo 435-4 Data Logging Air Quality Monitor, Battery-powered

6 In stock for delivery within 7 working day(s)
Add to Basket

Price (ex. GST) Each


(exc. GST)


(inc. GST)



RS Stock No.:
Mfr. Part No.:
0563 4354

RoHS Status: Not Applicable

COO (Country of Origin):
unitsPer unit
1 +$1,519.36

Testo Data Logging Air Quality Monitor

The Testo 435-4 data logging air quality monitor is a multi-functional measuring instrument with built-in differential pressure measurement for air conditioning, ventilation and indoor air quality, with data memory, PC software and USB data transfer cable includes battery and calibration protocol. The indoor air quality has a crucial influence on the well-being of humans at their workplace and is also a determining and important factor in storage and production processes. In addition to this, the indoor air quality signals whether the HVAC system is working at optimum energy level or needs to be adjusted using the Testo 435. The parameters CO2, relative humidity and room temperature are available for the evaluation of indoor air quality. In addition to this, absolute pressure, draught, Lux, U-value and surface temperature can be measured. For the determination of volume flow, you can use all possibilities for the measurement of flow velocities such as thermal probes, vanes and pitot tubes.
Supplied with:
Testo 435-2/-4 (without probe), battery, software, USB cable, manual

Features and Benefits

Temperature and humidity sensor, wireless or with cable
Compatible with deluxe and comfort probes
Memory for 10,000 values
Software for PC connection
Easy to use with user profiles
Display illumination
On-site print-out with Testo log printer (optional)
Temperature measurement resolution is 0.1⁰C
Maximum humidity measurement is 100%RH
Humidity measurement resolution is 0.1%RH
Carbon dioxide resolution is 1ppm
Battery power source
AA battery
Battery life of 200 hours
Minimum carbon dioxide level is 0ppm
Maximum carbon dioxide level is 10000ppm
The operating temperature ranges between -20⁰C and 50⁰C


ANSI/ESD S20.20:2014
BS EN 61340-5-1:2007

Maximum Temperature+1370 °C, +150 °C, +400 °C
Best Temperature Measurement Accuracy±0.5% + 0.4 °C
Power SourceBattery
Temperature Measurement Resolution0.1°C
Maximum Humidity Measurement100%RH
Humidity Measurement Resolution0.1%RH
Carbon Dioxide Resolution1ppm
Data LoggingYes
Battery TypeAA
Battery Life200 h
Dimensions225 x 74 x 46mm
Minimum Carbon Dioxide Level0ppm
Maximum Operating Temperature+50°C
Minimum Operating Temperature-20°C
Maximum Carbon Dioxide Level10000ppm
Model Number pTesto 435-4