Description
Features
- Maximum 5km Long distance measurement
- Backup battery for emergency use
- 100 pcs sensor tags could be recognized at a time
- Easily USB/SMS configuration
- Temperature and humidity alarm notification
- Low battery level notification
- RS485/Modbus-RTU/audible and visual device supported
- LED light indicating for different status
Technical Specifications
| Chipset | SHT20 |
| Application | Temperature and humidity monitoring |
| Frequency | 433/470/868/915MHz (optional) |
| Working Humidity Condition | 5%RH to 95%RH (non-condensing) |
| Maximum Range in Open Area | (5KM) |
| N.W (Net Weight) | 270g |
| Inner Lithium Battery | Built-in 3.7V / 850mAh (rechargeable) |
| Power Supply | DC12V |
| Measure Range of Temp and Humidity Sensor | Temp: -40℃ to +125℃, Humidity: 5%RH ~ 95%RH |
| Exterior RF Antenna | Receive RF signal better |
| Maximum Range in Open Area | 5km |
| Working Humidity Conditions | Up to 95% (non-condensing) |
| GPRS Frequency | 850 to 900 to 1800 to 1900 MHz |
| RF Frequency | 433 MHz |
| Modulation | LoRa |
| Interface | GPRS / RS485 / Modbus-RTU |
| Transmit Interval | 1 min – 60 mins (user definable) |
| Sensitivity of Receiving | -148 dBm |
| Inner Lithium Battery | Built-in 3.7V / 850mAh (rechargeable) |
| Power Supply | DC12V |
| Exterior RF Antenna | Receive RF signal better |
| Maximum Range in Open Area | 3.11 mi (5km) |
| Working Humidity Conditions | Up to 95% (non-condensing) |
| GPRS Frequency | 850 / 900 / 1800 / 1900 MHz |
| RF Frequency | 433 MHz |
| Modulation | LoRa |
| Interface | GPRS / RS485 / Modbus-RTU |
| Transmit Interval | 1 min to 60 mins (user definable) |
| Sensitivity of Receiving | -148 dBm |
| Low Voltage Alarm | Yes (user definable) |
| Temperature Alarm | Yes (user definable) |
| Working Temperature Conditions | -4°F to +140°F (-20°C to +60°C) |
| Measure Range of Temp and Humidity Sensor | -40°F to +257°F (temp -40°C to +125°C), (humidity 5%RH to 95%RH) |
| Dimension |  4.41 in × 4.13 in × 1.06 in (11.2 cm × 10.5 cm × 2.7 cm) |