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Stress Thermometer - SC911

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  • Cold hands are tense, warm hands are relaxed
  • Great for learning hand warming relaxation techniques
  • See your stress response; train yourself to relax
  • Measure relaxation effectiveness with quantitative data
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The Stress Thermometer SC911 lets you see changes in your hand temperature, which is a reflection of your blood flow and a measure of your stress response. Also known as the digital biofeedback thermometer.

When you’re stressed, tiny blood vessels under your skin constrict, and the flow of blood is redirected to your major muscles and internal organs. This is why your hands feel cold when you are under stress. The blood has been rushed away from your fingers, to the more vital parts of your body because of the fight-or-flight response.

Hand temperatures can range greatly, from a low of 60° to as high as 99° F. When you’re stressed, 5° changes can take place in seconds.

The basic rule for interpreting your temperature change is simple, "Cold hands are tense, warm hands are relaxed."

  • Measures temperature 58°-150°F (≈14°-65°C)
  • Reads in increments of 0.1°
  • Updates temperature display every 2 seconds
  • Switch between Fahrenheit and Celsius
  • 3/4" high LCD display
  • Clock and room temperature feature

Want to learn more about how it works? Read the article "About Hand Warming Biofeedback"


Below 79°F 79-84°F 84-90°F 90-95°F Over 95°F
Below 26°C 26-29°C 29-32°C 32-35°C Over 35°C
Highly Tense Tense Calm Relaxed Deeply Relaxed


Your temperature is connected to your stress level.

When you are tense, the blood circulation in your hands and feet is reduced. This reduced circulation causes a drop in temperature.

Relaxing increases your peripheral blood circulation, warming your hands and feet. With simple stress reduction exercises, you can increase your blood flow, raising your temperature.

The Stress Thermometer lets you gauge your baseline temperature and stress level, and see moment-to-moment skin temperature changes as they relate to your stress level.


Breathing from your lower diaphragm and not your upper lungs, inhale fully through your nose. Hold your breath for a moment, and exhale slowly through your mouth. Repeat, aiming for 6-12 breaths per minute. Watch your temperature increase as you relax.


  • To consistently raise your temperature to 95°F (35°C) or higher; to hold that temperature throughout your training session.
  • To develop the ability to recognize subtle changes in your hand temperature throughout the day, without the aid of the Stress Thermometer.
  • To develop the skill to increase your hand temperature in the middle of stressful situations.



  • Remove battery door
  • Set battery (+) side up
  • Replace door
  • Set rear switch to CLOCK position
  • Press HR to set hour
  • Press MIN to set minute
  • Press CLOCK BAR to display time
  • Set rear switch to TEMP C° or TEMP F°
  • Set mode switch to BODY Stress
  • Hold sensor between fingers, or tape sensor to finger tip
  • Wait 30 seconds for baseline temperature


  • Thermistor: Bead Tip, Approx. 8 feet long
  • Range: 58 - 150 °F (≈14 - 65 °C)
  • Accuracy: ± 1.8 °F (± 1 °C)
  • Battery (included): 1.5v Eveready 357, Maxwell LR44 or equivalent
  • Warranty: Limited 30 days parts and labor due to defective workmanship (excluding battery)
  • Dimensions: 2.75" (7 cm) wide, 2" (5 cm) high, 5/8" (1.5 cm) deep
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  1. Paul

    Stress Thermometer - SC911

    2021-03-20 19:46:59

    Hi can you ship to the UK, can't find in drop down menu, thanks

    1 answer
    1. Brian Milstead

      2021-03-23 13:59:52

      We can ship the SC911 Digital Biofeedback thermometer to the UK. Email for a quote adn we can send a Paypal request. We do not have the option for UK shipping on our website.

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  2. Steve J Moreno

    Stress Thermometer - SC911

    2020-11-06 00:34:31

    Can you utilize this on your big toe for footwarming bio-feedback techniques to increase circulation in the leg

    1 answer
    1. Brian Milstead

      2020-11-06 21:12:48

      The SC911 can be use to aid in foot warming.

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  3. Sam

    Stress Thermometer - SC911

    2020-07-22 23:43:09

    Is this currently in stock?

    1 answer
    1. Brian Milstead

      2020-07-24 21:04:13

      Yes the SC911 stress thermometer is in stock

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  4. Dixie

    Stress Thermometer - SC911

    2020-01-30 00:33:41

    Does this come with the sensor cord that you hold to your fingers? I don't see it pictured anywhere.

    1 answer
    1. Brian Milstead

      2020-01-31 21:56:56

      The Sc911 has a bead tip sensor. You can use breathable medical tape (non adhesive) or some Velcro or other hook and loop to keep it in place

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  5. Michael

    Stress Thermometer - SC911

    2020-01-10 19:32:32

    I'm interested in buying your product; looks great! But I'm wondering if the sensor can be submerged in water?


    1 answer
    1. Brian Milstead

      2020-01-31 21:59:34

      The sensor tip can be submerged in water.

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  6. Dani

    Stress Thermometer - SC911

    2019-02-09 00:51:12

    I just want to verify that these are actually in stock and can be purchased in a quantity of one.

    1 answer
    1. Brian Milstead

      2019-02-12 21:57:24

      The SC911 Digital thermometer is in stock.

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  7. Karen

    Stress Thermometer - SC911

    2019-01-30 00:12:56

    How do I 'turn off' the unit to preserve the battery? Do I need to remove the battery any time the unit is not in use? If so, that is poor design. There should be an on/off switch. The slide switch button on the back is at the bottom position (F Farenheit). The Green Mode switch on the front is set to Body - and without touching the probe, it is reading the room temperature constantly. I presume that is using the battery. When I change the Green Mode switch to Room, I see three bars and F on the display. Your instruction sheet says three bars means the unit is defective. If I set the switch on the back to Clock, does that disable the probe and preserve the battery? Thank you.

    1 answer
    1. Brian Milstead

      2019-02-13 19:50:21

      The SC911 can not be turned off. You can set the device to the time or room temperature when the unit is set to room.

      1 people found this answer helpful.
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  8. Walter Enang

    Stress Thermometer - SC911

    2019-01-03 05:07:40

    We live in a very hot country. Doesn't the overall temperature affect our body temperature thereby affecting the stress thermometer?

    1 answer
    1. Brian Milstead

      2019-01-03 16:54:35

      You would want to use the Stress thermometer at around normal room temperature.

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