Temperature, Humidity, Pressure, etc...

  • Text, email or phone call alertFreezer
  • Easy Touch Screen
  • Free secure software
  • 72 hour battery backup
  • Automatic data logging
  • Visible data history chart
  • Logs & stores years of data history
  • Wired Ethernet connection
  • 21 CFR 11, CDC, FDA and JCAHO compliant
Fridge-Freezer alarm


Easy Touch Screen

  1. Touch any temperature to view its history.
  2. 'Easy Touch' password protected menu system.
  3. Reset the Max/Min values by touching them.
ThermaViewer monitoring four fridges and freezers Send Me Information

Logs & Charts Temperature History

  1. View or print out a complete data log at any time.
  2. Use the trace-mode to scroll through the entire history.
  3. Automatically copy the data history to any PC or server.
Temperature history chart for refrigerator
I would like to have additional information.

Monitor Multiple Appliances or Areas

  1. Four remote sensors for;  refrigerators, freezers, clean rooms, incubators, warehouses, ovens, etc...
  2. Monitor refrigerators, freezers, -80 freezers, cryogenic freezers, ovens, etc...
  3. Wired or wireless sensors for temperature, humidity or pressure

ThermaViewer with PC and 4 fridges

Please send me a quote

Receive a text/email or phone call if an alarm occurs

  1. Customized text, email and phone alerts.
  2. A power out alarm warns you if a power failure occurs.
  3. Audio visual alerts on all alarm conditions in addition to text, email or phone calls.
Real-time temperature of four fridges
Please send me a quote.

Installing the TV2 in 4 simple steps

  1. 1. Position the  sensors.
  2. 2. Plug the monitor/alarm into a wall socket or a PC.
  3. 3. Review the date & time
  4. 4. Set the alarms.
    1. That is it.  You are done.

Installation Video

Monitor four areas or appliances with one TV2

The TV2 Alarm displays four temperature, humidity or pressure readings along with the maximum and minimum conditions.  The maximum and minimum readings can be Sensor #1 with unsafe temperaturereset at any time by touching the screen./p>

The color screen always indicates the safety status of each sensor.  The current temperature along with the maximum and minimum points appear in green as long as the temperature is within the safe range.  However, if any condition moves outside your limits it immediately turns redOnce that condition moves back into the safe zone it again turns green.  Because the color reflects the safety of the room or appliance a quick glance at the display is all you need to see if everything is OK or not.

Text, email or phone-call alert. Ringing alarm

The TV2 alarm/logger has an external, normally open (N/O), dry contact relay, to trigger a phone call, external alarm or other devices any time an alarm occurs.  The optional Auto-Dialer calls several phone numbers to deliver or leave a message if an alarm occurs.  An external relay can be wired into a building alarm system or used to trigger a powered external alarm.

Please send me a data sheet.

Downloads and backs up to a PC with the free secure TView software

Temperature chart
Temperature chart as it appears on your computer (click to enlarge)


The TV2 alarm/logger, has a number of alarms which have to do with the TV2 itself, and additional alarms for the conditions being monitored by the sensors.  Any active alarm is indicated visually on the TV2 with a message, a blinking screen and in some cases a change of color.

Most alarms cause the external normally-open (N/O) dry-contact relay to close to trigger an auto dialer so that phone calls are made to alert the staff when ever an unsafe condition has occurred.  Alarms can also initiate a Text or Email message.

Sensor condition alarms

  • High temperature alarm - buzzer, flashing message, closes relay, logged to memory
  • Low temperature alarm -buzzer, flashing message, closes relay, logged in memory
  • High humidity alarm -buzzer, flashing message, closes relay, logged in memory
  • Low humidity alarm -buzzer, flashing message, closes relay, logged in memory
  • Low sensor battery - battery indicator flashes red and icon show a low percentage reading
  • Temperature outside high or low set points - displayed temperature reading turns red, max or min conditions turns red
  • Humidity outside high or low set points - displayed humidity reading turns red

Visual alarm notice on ThermaViewer

TV2 display alarms

  • Power out - intermittent buzzer, flashing message, closes relay, screen sleeps after 20 seconds
  • Low battery - flashing message, the battery icons shows only a partial charge

How safe is your data?

All collected data is stored in non-volatile memory so even if you turn the TV2 alarm/logger off and come back 10 years later your data will still be there. 

During power outages the rechargeable internal batteries (Lithium Ion) will continue to operate the TV2 for as long as 100 hours.  And by "operate" we mean everything continues to work.

  1. Data logging continues
  2. Alarms will sound, show on the display and be recorded
  3. The relay will close if an alarm occurs
  4. Phone calls and/or emails will be made or sent.
  5. Data can be copied to your computer.

Where is the TV2 Used?

The TV2 Alarm can be used anywhere. 

For example:Master Themometer

  1. Pediatricians offices
  2. Public health clinics
  3. Research laboratories
  4. Testing laboratories
  5. Hospital operating rooms
  6. Museums
  7. Art Galleries
  8. Hospital nursing stations
  9. Pharmaceutical companies
  10. Manufacturing plants
  11. School kitchens
  12. Warehouses
  13. NASA facilities
  14. Historical Societies
  15. FDA laboratories
  16. Some of our customers

Each TV2 Alarm monitors four different areas.Current Status area for one sensor

Since the TV2 Alarm can track four different temperatures and humidity readings simultaneously you only need one display to monitor four areas.  This lowers the cost of monitoring multiple areas and means that you only have to look at one display to see what the current conditions are in each area.  The picture at the right is one fourth of the current status display showing the conditions for one of the sensors along with the maximum and minimum temperature recorded.  The current battery charge for the wireless sensor is also displayed. 

TV2 chart displayIn addition to the current status display you can see the historical conditions for each area or device being monitored.  To look at logged data for one of the sensors simply touch the Easy Touch display.

With one touch a data history chart immediately opens up so you can see what happened last night, last week, last month or even last year.  To view additional history touch the display again and scroll bars will appear on the chart.  The chart can be scrolled to the left or right to show earlier data.  It can also be zoomed into or out of to show much more historical information.  The chart is not only paperless it is never ending.  Once all of the non-volatile memory is filled with data the newer data will roll over oldest data, so you will always have the last 80,000 measurements stored from each sensor. 

Being able to see the history makes it easy to spot trends.  This is particularly useful for troubleshooting issues with refrigerators, freezers or areas in a warehouse or building.

All Logged Date is Encrypted to Comply with 21 CFR 11 Requirements

Once the data is collected and stored in the non-volatile memory of the TV2 alarm it is impossible for the user to alter it.  It can only be viewed or printed out, not changed.

Logged data can be downloaded to a PC and even saved as a file as an 256 bit encrypted file. And once saved it can only be viewed and/or printed out as a chart.  If a user name and password have been entered the chart is digitally signed.  The 'padlock' icon indicates that this has occurred. A signed file can only be opened if the same username and password are entered.

Likewise if a chart is printed out from TView a 'signature verified' or 'signature unverified' text box will appear at the top of the printed chart as part of the 21 CFR 11 requirement.

                                      TView chart on compuer scree

Once the encrypted TV2 data has been copied to a PC, it can be exported in unencrypted form to Excel where it can be viewed and manipulated if the user wants to analyze it.  In this case the data is not encrypted and no padlock or verification indication is shown.  The padlock and verification pen only appears on printouts or on a computer screen if the data integrity has been maintained.

Request information     Specifications     Users Guide

Designed and Manufactured in the USA

2009 Two Dimensional Instruments, LLC
(modified: September 23, 2016 06:09 AM)