
Elitech BT-3S Dual Channel Temperature Data Logger ±0.9℉ Accuracy, 4" Large LCD Display, Refrigerator Thermometer with External Probe for Liquid, Max/Min Recording, Wall Mount & Stand for Food Fridge Kitchen Lab
Lab-Grade Dual Sensor Precision
Internal temp/humidity sensor plus external probe for dual-channel synchronous monitoring. Accuracy up to ±0.9℉(±0.5℃), humidity range 10%–99%RH. Captures every fluctuation in food fridges and lab environments with precision you can trust.
4-Inch Large Display, Readable from Across the Room
4-inch oversized LCD shows temperature, humidity, time, and comfort level at a glance. Large, bold digits mean you can read it from across the kitchen or lab — no need to walk over just to check the reading.
One-Touch Max/Min Recall — Know Your Fridge's Every Fluctuation
Press a button to review historical max/min temperatures; one more press to reset. See exactly how much the temperature swings when the fridge door opens or the compressor cycles — essential for safe food storage.
Waterproof External Probe — Dips Directly into Liquids
The probe can be immersed directly into liquids for accurate readings across -40℉ to +212℉. Perfect for fridge interiors, water baths, liquid media, and reagent storage. The main unit stays outside while the probe reaches the target — synchronized dual-point monitoring.
Wall Mount + Stand — Flexible Mounting for Fridges & Labs
Keyhole slots for hanging on fridge doors or lab walls, plus a foldable kickstand for countertop or shelf use. Compact, tool-free setup — works just as well in your home kitchen as it does in a professional lab.
| Internal Temperature Range | 0-50; 32°F - 122°F |
| Internal Temperature Accuracy | ±0.5°C; ±0.9°F |
| External Temperature Range | -40-100°C; -40°F - 212°F |
| External Temperature Accuracy | ±1°C (0-60°C); ±2°C (60-100°C); ±3°C (-40°C - -20°C); ±2°C (-20°C - 0°C); ±1.8°F (32°F-140°F); ±3.6°F (140°F-212°F); ±5.4°F (-40°F - -4°F); ±3.6°F (-4°F-32°F) |
| Temperature Resolution | 0.1°C |
| Humidity Range | 0-99% RH |
| Humidity Accuracy | ±5%RH (10%RH—90%RH) |
| Humidity Resolution | 1% RH |
| Power Supply | 2*AAA(7#) |
| Operating Environment | Temperature: 0-50°C (32°F-122°F); humidity <75% RH |
| Storage Environment | Temperature: -10-60°C (14°F-140°F); humidity <80% RH (Batteries should be removed) |
| Certification | CE and UKCA certification |
Lab-Grade Dual Sensor Precision
Internal temp/humidity sensor plus external probe for dual-channel synchronous monitoring. Accuracy up to ±0.9℉(±0.5℃), humidity range 10%–99%RH. Captures every fluctuation in food fridges and lab environments with precision you can trust.
4-Inch Large Display, Readable from Across the Room
4-inch oversized LCD shows temperature, humidity, time, and comfort level at a glance. Large, bold digits mean you can read it from across the kitchen or lab — no need to walk over just to check the reading.
One-Touch Max/Min Recall — Know Your Fridge's Every Fluctuation
Press a button to review historical max/min temperatures; one more press to reset. See exactly how much the temperature swings when the fridge door opens or the compressor cycles — essential for safe food storage.
Waterproof External Probe — Dips Directly into Liquids
The probe can be immersed directly into liquids for accurate readings across -40℉ to +212℉. Perfect for fridge interiors, water baths, liquid media, and reagent storage. The main unit stays outside while the probe reaches the target — synchronized dual-point monitoring.
Wall Mount + Stand — Flexible Mounting for Fridges & Labs
Keyhole slots for hanging on fridge doors or lab walls, plus a foldable kickstand for countertop or shelf use. Compact, tool-free setup — works just as well in your home kitchen as it does in a professional lab.
| Internal Temperature Range | 0-50; 32°F - 122°F |
| Internal Temperature Accuracy | ±0.5°C; ±0.9°F |
| External Temperature Range | -40-100°C; -40°F - 212°F |
| External Temperature Accuracy | ±1°C (0-60°C); ±2°C (60-100°C); ±3°C (-40°C - -20°C); ±2°C (-20°C - 0°C); ±1.8°F (32°F-140°F); ±3.6°F (140°F-212°F); ±5.4°F (-40°F - -4°F); ±3.6°F (-4°F-32°F) |
| Temperature Resolution | 0.1°C |
| Humidity Range | 0-99% RH |
| Humidity Accuracy | ±5%RH (10%RH—90%RH) |
| Humidity Resolution | 1% RH |
| Power Supply | 2*AAA(7#) |
| Operating Environment | Temperature: 0-50°C (32°F-122°F); humidity <75% RH |
| Storage Environment | Temperature: -10-60°C (14°F-140°F); humidity <80% RH (Batteries should be removed) |
| Certification | CE and UKCA certification |
Original: $27.76
-65%$27.76
$9.72Description
Lab-Grade Dual Sensor Precision
Internal temp/humidity sensor plus external probe for dual-channel synchronous monitoring. Accuracy up to ±0.9℉(±0.5℃), humidity range 10%–99%RH. Captures every fluctuation in food fridges and lab environments with precision you can trust.
4-Inch Large Display, Readable from Across the Room
4-inch oversized LCD shows temperature, humidity, time, and comfort level at a glance. Large, bold digits mean you can read it from across the kitchen or lab — no need to walk over just to check the reading.
One-Touch Max/Min Recall — Know Your Fridge's Every Fluctuation
Press a button to review historical max/min temperatures; one more press to reset. See exactly how much the temperature swings when the fridge door opens or the compressor cycles — essential for safe food storage.
Waterproof External Probe — Dips Directly into Liquids
The probe can be immersed directly into liquids for accurate readings across -40℉ to +212℉. Perfect for fridge interiors, water baths, liquid media, and reagent storage. The main unit stays outside while the probe reaches the target — synchronized dual-point monitoring.
Wall Mount + Stand — Flexible Mounting for Fridges & Labs
Keyhole slots for hanging on fridge doors or lab walls, plus a foldable kickstand for countertop or shelf use. Compact, tool-free setup — works just as well in your home kitchen as it does in a professional lab.
| Internal Temperature Range | 0-50; 32°F - 122°F |
| Internal Temperature Accuracy | ±0.5°C; ±0.9°F |
| External Temperature Range | -40-100°C; -40°F - 212°F |
| External Temperature Accuracy | ±1°C (0-60°C); ±2°C (60-100°C); ±3°C (-40°C - -20°C); ±2°C (-20°C - 0°C); ±1.8°F (32°F-140°F); ±3.6°F (140°F-212°F); ±5.4°F (-40°F - -4°F); ±3.6°F (-4°F-32°F) |
| Temperature Resolution | 0.1°C |
| Humidity Range | 0-99% RH |
| Humidity Accuracy | ±5%RH (10%RH—90%RH) |
| Humidity Resolution | 1% RH |
| Power Supply | 2*AAA(7#) |
| Operating Environment | Temperature: 0-50°C (32°F-122°F); humidity <75% RH |
| Storage Environment | Temperature: -10-60°C (14°F-140°F); humidity <80% RH (Batteries should be removed) |
| Certification | CE and UKCA certification |
























