ST11TN/ST11NN is a wireless tag sensor used for asset management, which can implement timing sampling, upload temperature and ID information to the monitoring platform, and support LoRaWAN and LinkWAN protocols. Users can set the sampling and reporting cycle through the platform. The default setting is to upload temperature and humidity information to the platform every 1800 minutes.
The application platform can realize online management of assets in controllable areas by counting the online time and packet loss rate of asset tags. Periodic temperature measurement can realize temperature monitoring of Cargo piles or other application scenarios, thus ensuring the safety of goods.
ST11TN has built-in temperature sensor and ST11NN does not have temperature sensor. For detailed differences, see Product parameters and function description.
The ST11 series device are divided into two models. One built-in temperature sensor can regularly monitor the temperature of the tested environment. The model is ST11TN series, one is that the model of the sensor that only uploads heartbeat information without a temperature sensor is ST11NN series.
The built-in temperature sensor can monitor the ambient temperature and support periodic heartbeat function and battery power monitoring function. The heartbeat period and temperature sampling period can be modified through the Server.
No internal temperature sensor, supports periodic heartbeat and battery power monitoring functions, heartbeat period can be modified by the Server.
Operating voltage | 1.8~3.6V |
Operating temperature | -40℃ ~ 85℃ |
Working humidity | 0%~90%RH |
Emission current | <120mA @ 100mW (impedance matching) |
Received Current | <13mA |
Standby current | <5uA |
Frequency range | 470-510MHz863-928 MHz (optional) |
Transmit power | 19 ± 0.5dBm |
Receiving sensitivity | <-139dBm @292bps |
Antenna Type | Internal or external antenna (optional) |
Data transmission rate | 1.8kbps~5.4kbps |
Modulation mode | LoRa |
Supported LoRaWAN bands | CN470-510EU863-870AU915-928AS923 |
Supported LinkWAN bands | CN470AS923 |
Temperature measurement range | -40 ~ 85℃ |
Measurement accuracy | ± 0.3 ℃ |
Resolution | 0.01 ℃ |
Both ST11TN and ST11NN support the periodic heartbeat , and the heartbeat period can be modified by the Server. The default period is 1800 minutes.
ST11TN supports temperature monitoring, ST11NN does not support temperature monitoring. ST11TN can monitor the ambient temperature, and the monitoring period can be modified through the Server.
ST11NN can be pasted on the asset equipment through double-sided adhesive tape. When the adhesive tape of ST11NN falls off and ST11NN is stripped off from the asset, it can be detected by itself to give a drop alarm.
Both ST11NN and ST11TN have the function of battery power monitoring. When the battery power is found to be low, alarm data can be sent.