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Temperature Guard has been making quality products since 1977. We currently specialize in Food Service, Medical, and Industrial grade applications. We offer quality products from a family business.

Frequently Asked Questions

For live technical assistance call 888-248-7103, M-F, 9:00 - 4:00 EST or
send questions to

Can Temperature Guard products be used on an IP phone system?
We get this question a lot so we investigated. The short answer is yes if your IP phone provider can provision an ATA (Analog Telephone Adaptor) such as the Linksys PAP2T-NA.
We use Nextiva IP phones for our business. We were able to buy a Linksys PAP2T-NA (-NA is important/unlocked device) which is supported by Nextiva. We called Nextiva to help get the PAP2T-NA working.

There is one downside to using an IP phone system to get an alert call out. In the event of a power outage the entire network infrastructure including the ATA would have to be battery backed up for the phone call to get out.

Note: If you truely need the alarm call, you can't beat the reliablity of an plain old telephone line.

Customer Service Frequently Asked Questions

When will my order ship?
On most orders for in-stock items, please allow 1-2 business days processing time. Domestic orders of in-stock items with Next-Day or 2-Day shipping will be processed and shipped the same business day (excludes Saturday, Sunday and holidays), if received before 11:00a.m. EST.

For questions about your order, please send status requests to Be sure to include your order number or purchase order number in the subject line.

When will my order arrive?
Please refer to our Shipping Details page for detailed shipment related information.

Will Temperature Guard products work on a digital business phone systems?

All Temperature Guard products require an analog phone line. Most digital phone system manufacturers offer digital to analog converters that you can use to connect a Temperature Guard to your digital phone system.

Temperature Guard products can share an analog fax line. See the specific model's manual for details.

Will Temperature Guard products work on my cable network phone system?

In most cases, Temperature Guard will work with your cable phone system. If you can use a standard phone with your cable phone system, then the Temperature Guard will work; however, we suggest that you test the Temperature Guard once it is installed.


Can a Temperature Guard and an answering machine share the same line?
Yes, most answering machines answer the phone on the 4th ring. To have the answering machine answer the phone, program the Temperature Guard to answer the phone on the 5th ring. To access the Temperature Guard, call your home and let the phone ring 3 times. Hang up and wait 20 seconds. Call your home again and on the 2nd ring the Temperature Guard will answer.


Refrigerator/Freezer Guard VM605e Frequently Asked Questions

What is the minimum I need to buy to build a monitoring system?

One VM605E for every eight refrigerators and freezers.

One temperature sensor for each refrigerator and freezer.

The amount of wire you will need to go from the sensor to the VM605E.


How does the Refrigerator/Freezer Guard work?

Example 1: Temperature alarm condition
There are three items that need to be programmed for each sensor before monitoring can begin. The items are:

High alarm temperature limit (i.e. 5°F)

Low alarm temperature limit (i.e. -10°F)

Defrost cycle time delay in minutes (i.e. 45 minutes)

Alarm reminder time delay (i.e. 2 hours

Sensor 1 is installed in a freezer. The max limit is 5°F and the min limit is -10°F and the defrost time delay is 45 minutes. The temperature at the sensor raises to 6°F. 
After 45 minutes the Refrigerator/Freezer Guard will turn on the alarm relay and buzzer and begin to make emergency phone calls. The Refrigerator/Freezer Guard will call all of the programmed phone numbers until the PIN number is entered. If an answering machine answers the phone, the Refrigerator/Freezer Guard will leave the alarm message, but it will not stop calling. Once all of the phone numbers have been dialed, the Refrigerator/Freezer Guard will wait fifteen minutes and then retry all phone numbers. The Refrigerator/Freezer Guard will continue this calling pattern until the PIN number is entered.

If after the PIN number is entered the temperature is still out of limits for 2 hours, the Alarm Reminder Feature will make the Refrigerator/Freezer Guard begin to make emergency phone calls again.

If the temperature in the freezer goes back within limits the Refrigerator/Freezer Guard will stop making calls, and turn off the alarm relay and buzzer.

Temperature alarm message
"Warning the lab freezer sensor one temperature is 6 degrees and has been out of limits for 45 minutes. Enter your PIN number" ( the lab freezer portion of the message is recorded by the user).

If the alarm condition is acknowledged but the temperature is still out of limits after the Alarm reminder time delay has expired, the Refrigerator/Freezer Guard will begin to make emergency phone calls.

Example 2: Door Open input alarm condition
The Door Open Input has been programmed with a 10 minute time delay. After the door is left open for more than 10 minutes, the Refrigerator/Freezer Guard goes into alarm condition and begins to make emergency phone calls in the same manner as a temperature alarm condition.

Input alarm message
"Warning door is open for 11 minutes. Enter your PIN number"

Can a Refrigerator/Freezer Guard and an answering machine or fax machine share the same line?

Yes. To have the answering/fax machine answer the phone, program the Refrigerator/Freezer Guard to answer the phone on the 5th ring. To access the Refrigerator/Freezer Guard, call the number and let the phone ring 3 times. Hang up and wait 20 seconds. Call the number again and on the 2nd ring the Refrigerator/Freezer Guard will answer. How do you enter a negative number when programming a temperature limit.

To enter a negative limits, press the * key and then enter the number. For example, to enter -15 degrees, press the *15 and then the pound. You will here "negative 15 degrees".

Resetting a device from a static IP address back to DHCP.
If you are moving a Temperature Guard configured with a static IP address to a network where this static IP address will not function, you should reset the Temperature Guard back to DHCP mode before the move. 

1. Run the Temperature Guard IP Address Setup program.

2. Click the Find all Temperature Guard servers on the network button to find all of the Temperature Guard devices on your network. A list of their IP address' are displayed. Only Temperature Guard's IP addresses are displayed.

3. Click on the IP address of the device you want to reset back to DHCP mode. The selected IP address will turn yellow.

4. Click on the Reset the Selected Server back to DHCP Mode button. You will be prompted to confirm this change. Click OK to proceed. 

5. The program will again find all Temperature Guard devices on your network. The program will confirm that the IP address has be reset from a static IP to DHCP mode.

A device which is not able to be found on the network or communicated with may have invalid network address settings and need to be restored to DHCP mode. This can be achieved by using the "Reset Device to DHCP" found under the advanced menu.

Advanced Tools
Under the Advanced menu option there are three advanced tools to allow you to:
· Set the IP Address, Gateway Address, and Subnet Mask via web
· Manually Set an IP Address when no DHCP server is present or when you can not locate the device on the network
· Test Communications to a Temperature Guard device

Set IP, Gateway, Subnet via Web
This feature is for IT professionals and is to be used only if it is necessary to change the subnet mask. This procedure is unnecessary for standard networks. Verify that you have the latest version of Java before running.

1. Click on the Server Properties button to display the Server Properties.

2. Verify the correct IP Address setting

3. Enter the Subnet Mask
-Verify that the Subnet Mask is correct before clicking Update Settings button. If an incorrect Subnet Mask is entered the TG device will be unable to communicate.

4. Enter the Gateway Address
-Verify that the Gateway Address is correct before clicking Update Settings button. If an incorrect Gateway Address is entered the TG device will be unable to communicate.

5. Click the Update Settings button.

6. Close the browser window.

Manually Set IP
In networks without a DHCP server or when you are unable to find a Temperature Guard device on the network, it may be useful to set a static IP address manually. You will need the MAC address of the device you are communicating with. This can be found on the white label on the network enabled Temperature Guard device itself. 

1. Enter the MAC address of the device in the window and click OK.

2. Enter the static IP address you wish to give the device and click OK.

3. Confirm the static IP address and click OK.

4. Depending on your network configuration, the device may or may not show up in the device listing now.

5. Perform the Test Communication function to verify IP Address functionality. If Test Communication fails, utilize the ping command by opening a command prompt and entering ping (where is the IP address you gave the device.)


Data Capture does not display temperature readings when running on a Windows Vista machine


When running Data Capture on a Windows Vista machine, there are instances when the temperature data is not displayed.


1) The issue is resolved by giving the user Power User permissions to the Vista pc, and applied his Domain account also to the Temperature Guard installation folder with additional permissions.


2) In Data Capture, click on Setup | Configure Data Capture
Select the Data Logging tab
Click the Change Log File Location button
Navigate to Program Files\Temperature Guard\Data Capture
Click OK button
Click Apply button