8am-5pm EST



Remote Refrigerator/Freezer Temperature Monitoring System.

Single Probe, T Sentry Model 140: Product Description


  • Easy to read LCD display.
  • Audio & visual alarms.
  • Adjustable displayable alarm settings and initial alarm delay period.
  • Selectable alarm mute period.
  • Standard operating range (-100°C to +100°C).
  • Available Options:
    • NiMH backup battery.
    • 0.1°C display.
    • SPDT alarm contact output with adjustable relay delay period.
    • 4-20 mA output.
    • RS-485 output.
    • °F display.
    • Thermocouple sensors;
      -Type T for -200°C to +50°C range.
      -Type K for 0°C to 400°C range.
    • Password-protected set points.
    • Switch input.
Made in the USA Emblem

Product Overview:

NOTE 1: For multi-probe temperature applications, visit our MPS Series monitoring alarm system page.

NOTE 2:For multi-probe temperature/humidity applications, visit our MPS HT monitoring alarm system page.

The T Sentry Model 140 is a stand-alone single-probe continuous temperature monitoring/alarm notification system widely used within refrigerators, freezers and walk-in coolers - where material storage temperatures must be maintained within a narrow range. By selecting a different probe type/temperature range the system can also be used for high temperature monitoring applications (e.g., within ovens, heating chambers and manufacturing processes).

For any application, the T Sentry Model 140 includes settable high/low temperature thresholds, audible/visual alarms (via beeper and LEDs), programmable alarm mute and "chirp" periods and a UL-listed plug-in power supply. Additional features include alarm muting (for user-selectable periods up to 32 minutes), optional relay contacts (for indicating temperature and/or power failure conditions) and an optional alarm auto dialing system. The system is easily programmed for any application (view the video below to see for yourself).

NOTE:The T Sentry 140 can be used in a "stand-alone" mode AND/OR be integrated into our AMS, PC-based Ethernet network data logger/alarm notification system (using wired and/or wireless connections). This allows you to choose (at any time) between basic monitoring and alarm notification versus full remote network data logging and analysis (to meet Federal and State safety compliance guidelines and carry out statistical process control).

Also, since data portability and security are important for most users, we do NOT lock you into a cloud storage solution as an up-sell. There are many SaaS solutions available and we prefer to allow you to make this important decision based on your needs.

Additional Product Features:

Power: 9-30 volts DC (25 ma maximum). 120VAC, UL listed main power supply comes standard (220v is optional).
Optional Battery Back-Up: 7-cell NiMH, 8.4 volt 150 ma/hr. Uses standard 9v size (option B).
Charger: 2 ma trickle charger; built-in.
Standard sensor: 100 ohm RTD in 4.0-inch or 2.0-inch stainless steel sheath with a 10' lead wire.
Temperature ranges: -100 to +100°C (Model 140-100), °F ranges are available, (option - F).
Resolution: 1°C standard, 0.1°C (option - H).
Accuracy: +/-1°C standard, +/-0.2°C (option - H).
Sensor options:
Model 140-400 - 'K' thermocouple, 0°C to 400°C, +/-1°C
Model 140-200R - 'T' thermocouple, -200°C to +50°C
1000 ohm RTD, voltage or current input (other ranges available per special order)
Mechanical: Case is black Bakelite, 5" wide x 4.25" height x 1.75" deep, wall mount with Velcro, or set on bottom edge. All wires exit through side.
Outputs: SPDT relay contacts with delay period (option - R)
10mV per degree, (option – V)
4 to 20 mA output, (option – I)
Digital output, (option – D)
Warranty: One-year on all Hampshire Controls products.

Model T Sentry 140 Documentation:

T Sentry Model 140 - Pricing

T Sentry Model 140 - Brochure

T Sentry Model 140 - Manual

Product Warranty


© Copyright Hampshire Controls Corporation