
Model | BlueTag TH20 | Memory Capacity | 65000 readings |
Shelf Life | 1 year | Start Delay | 0 minute-*** |
Operating Life | 200 days | Logging Interval | 1 minute-99 minutes |
Wireless Connection | Bluetooth 5.2, NFC (optional) | Battery | 3.0V CR2032 lithium battery |
APP Language | English, Chinese | APP OS | Android |
Temperature Unit | ºC, ºF | Report Format | PDF & CSV |
Temperature Range | -30ºC~+70ºC | Temperature Accuracy | ±0.5ºC at full range (-30ºC to +70ºC) |
Humidity Range | 0~100%RH | Humidity Accuracy | ±3.0%RH |
Weight | 36.5g | Dimension | 62mm*47mm*13mm |
Installation | 3M stickers, magnetic | Certification | CE, CE-RED, EN12830 |

BlueTag TH20 Bluetooth Temperature and Humidity Data Logger
Paired by Bluetooth and review history by APP
Support Android and IOS
Comprehensive data analysis, filtration and graphing
Data synchronization among multiple users.
Multilingual app
Free data filtering by minute
Battery replaceable













Freshliance Electronics Co., Ltd, established in 2015, stands as a beacon of quality and innovation. Nestled in the heart of the Hengfengkechuang Center within the Zhengzhou Airport Economy Zone, China, our ISO9000-certified enterprise excels in the realm of temperature and humidity data loggers, alongside advanced environmental monitoring IOT systems tailored for warehousing.shipping, and diverse cold chain applications across numerous industries, including fruits and vegetables, food processing, seafood, life sciences, pharmaceuticals, and logistics.
Our dynamic and cutting-edge R&D team is passionately dedicated to both hardware and software advancements. Every product we craft is meticulously designed and manufactured to align with the unique needs and expectations of our esteemed customers. And our IOT platform, empowered by WIFI and 4G/5G communications, seamlessly integrates sensors with Bluetooth, Lora, or RF technologies, delivering the exceptional solutions you envision.
Guided by the principle of "Focus on fresh and safe life only", we have successfully deployed nearly 10 million temperature and humidity data loggers globally, earning widespread acclaim fortheir unparalleled accuracy in time, temperature, and humidity measurements, especially under extremely low temperatures below -30ºC. Our independent verification laboratory rigorously assesses long-term product performance across a range of temperature and humidity environments. Our cutting-edge temperature and humidity data loggers adhere to stringent CE, FDA, ROHS, EN12830, and RTCA/DO-160 standards, ensuring not only compliance but also easy operation, durability, and advanced functionality.
Our future vision is to perpetually innovate, providing our customers with products that are even more accurate, high-quality, and backed bysuperiorcustomer service and support.
We welcome OEM and ODM orders with open arms!





10 million loggers trusted by customers worldwide
In-house independent laboratory ensures product excellence
Unparalleled production capability substantiated by data
Fully certified by FDA, CE, EN12830, and ROHS
A comprehensive range of loggers to satisfy various requirements
Expertise-driven cost efficiency with unwavering quality
24/7 customer service offering prompt responses and rapid delivery
Private label and comprehensive one-stop OEM services
ISO-certified manufacturer guaranteeing quality assurance
FAQ
Q1: Can I place a sample order first?
A1: Absolutely! We provide tailored quotes for small, medium, and large quantities, allowing you to select pricing based on your specific order size.
Q2: How could I pay them?
A2: We gladly accept PayPal, Western Union, and T/T, offering you versatility and convenience. Just inform us of your preferred payment method, and we will promptly provide you with our bank details for a seamless transaction. Alternatively, we are happy to accommodate any specific payment preferences you may have.
Q3: How do I place an order?
A3: Placing an order is as easy as 1-2-3! You can send your purchase order directly via e-mail, Trade Manager, or Skype. For added assurance, feel free to request a Proforma Invoice from us, so every detail is confirmed, guaranteeing a hassle-free transaction from start to finish.
Q4: What is the expected delivery time for my order?
A4: Our commitment is to deliver swiftly and efficiently. For samples, expect production and shipping within just 2-3 working days. Bulk orders generally take 5-20 working days, depending on your design specifications. We are dedicated to getting your order to you as promptly as possible, tailored to your needs.
Q5: What shipping methods do you use to send the products?
A5: For speedy and secure delivery, we primarily utilize the services of trusted couriers such as DHL, UPS, and FedEx. These reputable partners enable us to ensure your products arrive on time and in perfect condition, every single time.
Q6: Are you able to customize products based on our designs and include our logo?
A6: Absolutely! We specialize in both standard and custom-tailored products, including the incorporation of your logo. Our expert R&D team is on standby to tackle any technical challenges. With our ODM/OEM services, we transform your unique vision into reality, guaranteeing exceptional precision and superior quality.