Model	TT19SI	TT19	TT19EX
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Name	TT19SI 4G Real-Time Temperature and Humidity Data Logger	TT19 4G Real-Time Temperature and Humidity Data Logger	TT19EX 4G Real-Time Temperature and Humidity Data Logger
Monitoring information	Temperature, humidity, location, light, vibration	Temperature, humidity, location, light, vibration	Temperature, humidity, location, light, vibration
Temperature and humidity sensor	Sensirion SHT30	Sensirion SHT30	External PT100 probe + Built-in Sensirion SHT30
Temperature measurement range	-30℃~+60℃ (-22°F~140°F)	-30℃~+60℃ (-22°F~140°F)	External temperature: -200℃~+200℃ (-328°F~392°F) Built-in temperature: -30℃~+60℃ (-22°F~140°F) Built-in humidity: 5%~95%RH
Humidity measurement range	5%~95%RH	5%~95%RH
Temperature accuracy range	±0.3℃ (0℃~+60℃); ±0.5℃ for other range	±0.3℃ (0℃~+60℃); ±0.5℃ for other range	External probe temperature: 0.15+0.002*| t | Built-in temperature: ±0.3°C (0°C~+60°C); ±0.5°C for other range Built-in humidity: ±3% (10%~90%RH); ±5% for other range
Humidity accuracy range	±3% (10%~90%RH); ±5% for other range	±3% (10%~90%RH); ±5% for other range
Light sensor range	0-64000lux	0-64000lux	0-64000lux
Vibration sensor range	0-16G	0-16G	0-16G
Minimum unit	0.1℃ / 0.1%RH / 1 lux / 0.001G	0.1℃ / 0.1%RH / 1 lux / 0.001G	0.1℃ / 0.1%RH / 1 lux / 0.001G
Position type	LBS base station position	GPS position, WiFi position, LBS base station position	GPS position, WiFi position, LBS base station position
Memory capacity	16,072	16,072	16,072
Network system	Global LTE 4G, with 2G fallback	Global LTE 4G, with 2G fallback	Global LTE 4G, with 2G fallback
Recording interval	Default 15min, configurable	Default 60min, configurable	Default 60min, configurable
Reporting interval	Default 60min, configurable	Default 60min, configurable	Default 60min, configurable
Usage time	Once fully charged, it can be used for 120 days based on reporting interval of 60 min	Once fully charged, it can be used for 60 days based on reporting interval of 60 min and GPS turned on	Once fully charged, it can be used for 60 days based on reporting interval of 60 min and GPS turned on
USB interface	USB-C	USB-C	USB-C
Usage type	Singleuse, Rechargeable	Multiuse + rechargeable	Multiuse + rechargeable
Waterproof level	IP64	IP64	IP64
Dimension	100mm*66mm*29mm	100mm*66mm*29mm	100mm*66mm*29mm
Weight	148g	152g	175g