Datasheet

www.sensirion.com Version 1.1 – May 2010 1/7
Datasheet Evaluation Kit EK-H4
For SHT7x and SHT2x Humidity and Temperature Sensors
 Ready to use Hard and Software
 Suitable for data-logging experiments
 Programmable Interface
 Dew Point and Energy Calculation
 Multiple Multiplexer Boxes with Sensors lockable
Set Up
Figure 1 Schematic of Evaluation Kit EK-H4. Multiplexer box
works without connection to computer but using a power plug.
Optionally, the multiplexer box may be connected to computer
with data-logger software for recording and displaying data
readings.
Material Contents
EK-H4 contains the following components, enclosed in a
handy suitcase:
 1 EK-H4 multiplexer box: Providing 4 channels for
sensor cables, one port for power supply cable and
one port for optional USB interface with a computer.
Measured values may be read from a display on the
multiplexer.
 4 SHT71 sensors: Pin type sensor with version 4B
sensor chip. Please refer to datasheet SHT7x for
more details.
 4 SHT21 sensors: SMD type, DFN 3-0 packaged
sensors with version 4C sensor chip mounted to small
PCB with connector. Please refer to datasheet SHT21
for more details.
 4 Sensor cables with RJ45 plug for connecting
sensors with multiplexer box of 3m length.
 1 USB cable for connection to computer.
 1 Power supply unit with US, EU, AU adapter.
 1 Memory Stick with multi viewer software for run-
ning EK-H4 as a data-logger.
Device Certification
The Evaluation Kit EK-H4 is RoHS and WEEE compliant.
Product Summary
The evaluation kit EK-H4 is made for running
Sensirion’s humidity and temperature sensors and
display measured values. It is able to communicate
with SHT1x, SHT7x as well as the new generation
SHT2x and display the measurement values on a
display on the multiplexer. The main purpose of the
evaluation kit is demonstrating the unique
performance of Sensirion’s humidity and temperature
sensors without any own hard or software design
work.
In connection with a computer and specific software
supplied with the evaluation kit it may also be used
as a data-
logger for simple experimental
measurements. The multiplexe
r with 4 ports is
connected to the computer via USB interface. The
software may record and display humidity and
temperature values as well as calculated values of
dew point and power consumption. Various
multiplexer boxes with sensors
may be run by same
software across various USB interfaces.