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HF+UHF Temperature Sensor NFC RFID Tags is designed for temperature monitoring and logging. It has three interfaces including NFC HF contactless interface, UHF contactless interface and I2C contact interface. All interfaces can fulfill a single-time temperature measurement or start a temperature logging process and read the temperature data back. HF+UHF Temperature Sensor NFC RFID Tags works either battery-powered or none battery-powered. Temperature data can be stored in NDEF format and can be read by both Android phone and iPhones with NFC. 
The RFID temperature sensor tag is an RFID sensitivity sensing tag combo by HF+UHF.
It adds temperature detection and sensing function to traditional RFID tags, which can constantly detect the temperature of items, play a temperature alarm and regulation role, and is widely used in cold chain transportation, refrigerated warehouses and other application fields.
Applications
* Cold chain evaluation for medical, fresh food, and special chemicals
* Long distance temperature measure and monitor
* NFC sensor for body or environment temperature measurement
* Pressure measurement 
Interface
Contactless-UHF
| EPC Global C1G2 V1.2.0 | Operating frequency: 840~960MHz | Temperature measurement sensitivity(battery assistant mode): -24dBm | Contactless-HF(NFC) | ISO15693&NFC Forum Type V or ISO14443&NFC FORUM Type2 | Operating Frequency: 13.56Mhz | Resonant capacitance: 23.5pF | Contact | I2C | Power supply: 2.7V~3.6V | Communication baud rate: 100k bps |
Temperature Measurement and Logging 1 | Battery Supply Voltage: | 1.1V~1.65V | 2 | Temperature Measurement Range: | -35℃~50℃ | 3 | Temperature Sensor Absolute Accuracy: | ±0.5℃ | 4 | RTC Measurement Interval: | 1s ~ 65535s | 5 | Configurable Delay time for starting RTC logging: | 1m ~ 65535m | 6 | Configurable stop time for the measurement and logging | 7 | Multi-mode for logging: | normal mode and limit mode | 8 | RTC accuracy: | ±2% @ -35℃~50℃ | 9 | Power consumption: | 60nA in PD(Power Down) mode; 600mA in standby mode(RTC ON) |
EEPROM * Total memory: 160k bits
* Potential temperature point: 20000 Security
1. HF UID is unchangeable 2. UHF TID is unchangeable
3. Access to user area is protected by password
4. Lock mechanism for user memory block(write protection)
5. Temperature data area is read-only for the contactless interface
Special feature
LED lighted function in passive mode and semi-active mode
Battery low voltage warning function
Light strength warning function
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