Compare temperatures at four locations without switching between separate meters. The Sato SK-L400T combines a four-channel temperature display with SD card recording, helping operators follow temperature changes and review the results after a measurement session.
Select Type K thermocouple probes to match each measurement point. For example, a test may require immersion probes for liquids, contact probes for surfaces or air probes around equipment. Check the probe's temperature rating, dimensions and cable length before ordering.
Recording and alarm functions
- Simultaneous readings: Display all four channel temperatures together.
- Independent alarms: Upper and lower limits can be set for each channel, with a buzzer and flashing LED indication.
- Recording options: Manual logging, scheduled start and stop, and a memo function for capturing current readings.
- Measurement comparisons: Maximum, minimum, relative value, T1–T2 temperature difference and offset functions.
Instrument specifications
| Model / catalogue number |
SK-L400T / 8191-00 |
| Inputs |
4 Type K thermocouple channels with miniature thermocouple connectors |
| Display range |
-202.0 to 1372°C; usable measurement range depends on the connected probe |
| Main-unit accuracy |
±(0.3% of reading + 1)°C at 23 ±5°C; probe accuracy must also be considered |
| Surface-probe accuracy allowance |
An additional 2% of reading applies when using a surface probe |
| Resolution |
0.1°C from -202.0 to 999.9°C; 1°C above this range |
| Sampling |
Approximately every second |
| Logging intervals |
1, 2, 5, 10, 15 or 30 seconds; 1, 2, 5, 10, 15, 30, 60 or 90 minutes |
| Power |
Four AA alkaline or NiMH rechargeable batteries; optional dedicated AC adapter |
| Typical battery life |
Approximately 500 hours with alkaline batteries at room temperature, one-minute logging and the backlight and display switched off |
| Dimensions |
Approximately 158 × 106 × 40 mm (W × H × D) |
| Weight |
Approximately 420 g including batteries |
Review temperature records on a PC
The dedicated 4ch Datalogger for Windows software supports graph plotting, channel statistics and accumulated-temperature analysis. CSV export allows further work in spreadsheet software.

Confirm software compatibility with your intended computer before purchase.
Optional thermocouple probes
Probes are sold separately. The options below retain the illustrations from this product page. Confirm the required model and current availability when requesting a quotation.
| Probe model | Type | Illustration |
| SK-K010 |
Standard immersion |
 |
| SK-K020 |
Quick response |
 |
| MC-K7100 |
Standard immersion |
 |
| MC-K7101 |
General purpose |
 |
| MC-K7102 |
High temperature |
 |
| MC-K7103 |
Asphalt; stainless steel grip |
 |
| MC-K7105 |
Shielded duplex wire |
 |
| MC-K7106 |
Asphalt; resin grip |
 |
| MC-K7108 |
Compost |
 |
| MC-K7109 |
Asphalt |
 |
| MC-K7301 |
Surface contact |
 |
| MC-K7304 |
Screw-mounted surface |
 |
| MC-K7307 |
Surface contact |
 |
| MC-K7308 |
L-shaped surface |
 |
| MC-K7500 |
Water temperature |
 |
| MC-K7501 |
Clip; black |
 |
| MC-K7502 |
Clip; red |
 |
| MC-K7503 |
Telescopic |
 |
| MC-K7504 |
Waterproof probe |
 |
| MC-K7505 |
Air; cable-connected |
 |
| MC-K7506 |
Air; plug-in |
 |
Thermocouple junction cable

Specify the required cable arrangement and length when ordering. Connector compatibility alone does not establish the suitability of a probe for your application.
Plan your measurement setup
Identify what each channel will measure before selecting accessories. Include the lowest and highest expected temperatures, required insertion depth or surface-contact arrangement, cable routing and recording duration.
Contact us for pricing and availability. Send the number of probes required, preferred probe models, quantity and any calibration requirements.