With a corrosion-resistant stainless steel probe tip, you can ensure precise and durable temperature measurements in harsh environments like freezers or chemical labs.
With a clear OLED display and intuitive button interface, you can monitor real-time temperature and humidity data directly on the device without needing a computer or external software.
With WiFi/4G connectivity, you can access temperature data remotely and receive SMS alerts, enabling 20% faster response times than traditional wired systems*.
With wireless capability, you can install the logger in hard-to-reach areas like deep freezers, refrigerators, or lab equipment, avoiding the limitations of wired solutions.
With certifications for food-grade safety and laboratory-grade precision*, you can trust its reliability in critical applications like cold storage or pharmaceutical testing.
The T20 OLED USB Wireless WiFi 4G SMS Temperature Humidity Data Logger is a versatile monitoring solution designed for precise temperature and humidity tracking in freezers, cold rooms, laboratories, and industrial environments. Its wireless capabilities, durable design, and customizable features make it ideal for applications requiring real-time data logging and remote alerts.
Feature | Specification | Application Scenario |
---|---|---|
Wireless Communication | WiFi/4G/USB | Remote monitoring in warehouses or labs without wired infrastructure |
Display | 1.3" OLED screen | Real-time temperature/humidity readings in harsh environments |
Sensor Range | -40°C to 85°C / 0-99% RH | Cold storage validation or lab environmental control |
Battery Life | 2-5 years (based on usage) | Long-term deployments in freezers or refrigerators |
Data Storage | 16GB-64GB internal memory | High-frequency logging in pharmaceutical or food storage |
Alert System | SMS/email/APP notifications | Critical threshold breaches in remote facilities |
Adjustable parameters include sampling interval (1 sec to 1 hour), alert thresholds, and data logging frequency to meet specific needs such as lab research protocols or industrial cold chain compliance.
With its wireless design, the T20 can be placed in hard-to-reach freezer corners or vibration-prone lab equipment. The SMS alerts ensure critical temperature deviations are addressed immediately, even in areas with poor internet connectivity.
Parameter | Base Model | Advanced Model | Pro Model |
---|---|---|---|
Connectivity | WiFi + USB | WiFi/4G + USB | WiFi/4G + SMS + USB |
Battery Life | 2 years | 3 years | 5 years |
Storage Capacity | 16GB | 32GB | 64GB |
Alert Options | APP/email | APP/email/4G | APP/email/SMS |
Optimal Version Selection:
With the T20’s SMS-enabled Pro Model, you can ensure compliance in remote pharmaceutical warehouses. Its 64GB storage handles high-frequency logging for FDA audits, while 4G connectivity provides real-time updates during transit. For basic freezer monitoring, the Base Model’s WiFi/USB setup offers a cost-effective solution.
Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
---|---|---|---|---|
Communication Interface | Remote monitoring in warehouses, labs | Industry Standard: WiFi (2.4GHz) Our Base: WiFi + USB Our Advanced: WiFi + 4G + SMS (▲▲) | ▲▲ Advanced: 4G/SMS enables alerts in cellular networks (e.g., SMS alarms for critical temperature breaches) | Industry Standard lacks redundancy; Advanced requires SIM card (subscription cost) |
Display Type | Low-light environments (labs, freezers) | Industry Standard: LCD (ISO 9001 compliant) Our Base/Advanced: OLED (▲) | ▲ OLED: Better visibility in dark environments (1000:1 contrast ratio) | Higher power consumption compared to LCD (offset by advanced battery design) |
Durability (IP Rating) | Harsh industrial settings | Industry Standard: IP54 (dust/water resistant) Our Advanced: IP67 (▲▲) | ▲▲ Advanced: Submersible up to 1m for 30min (ideal for cold storage washdowns) | Base version limited to IP54 for cost savings |
Battery Life | 24/7 monitoring in power-out areas | Industry Standard: 12h (AA batteries) Our Base: 24h (rechargeable) Our Advanced: 48h (▲▲) | ▲▲ Advanced: Lasts 2 full days without charging (supports extended outages) | Base requires daily charging; Advanced has bulkier design |
Data Logging Capacity | Long-term lab studies | Industry Standard: 10,000 readings Our Base: 100,000 readings Our Advanced: 1,000,000 readings (▲▲) | ▲▲ Advanced: Stores 1 year of 1-min interval data (ISO 17025 compliant) | Industry Standard requires frequent manual downloads |
Certifications | FDA-regulated environments | Industry Standard: CE Our Base: CE + ASTM E1451 Our Advanced: CE + ASTM + FDA 21 CFR Part 11 (▲) | ▲ Advanced: FDA compliance for pharmaceutical labs (audit-ready logs) | Base lacks FDA certification for critical applications |
⭐⭐⭐⭐⭐ Dr. Emily Tran - Pharmaceutical Research Lab
"The T20 Pro Model has been a game-changer for our cold storage compliance. The OLED display is crystal clear, even in low-light freezer conditions, and the SMS alerts have prevented two potential temperature excursions during weekend power fluctuations. Setup was straightforward, and the 64GB storage easily handles our high-frequency logging for FDA audits."Purchase Date: February 2025 | Usage Period: 4 months
⭐⭐⭐⭐⭐ James Wilkins - Cold Chain Logistics Manager
"We deployed 12 Advanced Models across our warehouse freezers and mobile refrigerated trucks. The 4G connectivity works flawlessly, even in remote drop-off zones with no WiFi. Being able to set custom thresholds and receive instant 4G alerts has reduced response time by over 30%. Battery life is impressive—still at 90% after 7 months of continuous use."Purchase Date: October 2024 | Usage Period: 8 months
⭐⭐⭐⭐☆ Linda Park - Home User
"I bought the Base Model for my wine cellar, and it’s been reliable and easy to use. I appreciate the simple OLED interface—no need to dig out my phone every time I want to check humidity. WiFi alerts are prompt, though I wish SMS was included even at this level. For the price, it’s a solid choice for home monitoring."Purchase Date: April 2024 | Usage Period: 5 months
Average Rating: 4.7/5 ⭐ (89 Reviews)
Dr. Alan Foster - Cold Chain & IoT Solutions Specialist
"The T20 series stands out in the crowded data logger market due to its multi-protocol connectivity (WiFi, 4G, SMS)—a rare feature that ensures redundancy in mission-critical environments. The Pro Model, in particular, meets FDA 21 CFR Part 11 and ISO 17025 standards, making it ideal for pharmaceutical and biotech applications where audit trails and alert reliability are non-negotiable."
Maria Gonzalez - Food Safety & HACCP Advisor
"For food storage facilities needing reliable, continuous monitoring, the T20’s stainless steel probe and IP67-rated durability make it perfect for washdown environments. I’ve recommended it to three clients already—its USB data export simplifies compliance reporting, and the 2-year minimum battery life reduces maintenance overhead significantly."
Posted: 2 days ago
"The SMS alert from our T20 Pro saved us when the freezer compressor failed overnight. No WiFi at the site, but the SMS came through instantly. We moved the vaccines in time. This device is now part of our emergency protocol."
Posted: 1 week ago
"Easy setup, accurate readings, and the OLED screen is bright and readable in the dark. Data export via USB was seamless for our monthly audits. Highly recommend the Advanced Model for any research lab."
Posted: 3 weeks ago
"Love the build quality and 4G reliability. Only issue: the companion app occasionally disconnects during firmware updates. Support provided a workaround quickly. Otherwise, excellent performance in our cold room."
The Product Description is generated by third-party, and Alibaba.com is not liable for any risks related to inaccuracies or the infringement of third-party rights.
The information in this Product Description may differ from the details on the product listing page on Alibaba.com. Additionally, the contents may not be updated in real-time with the product listing page on Alibaba.com, and there may be delays in reflecting the most updated information. The description on product listing page takes precedence. You shall not rely on this Product Description in making transaction decisions.
The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.