1. Introduction
1.1 Description
SE71 is a wireless temperature and humidity sensor, which can realize timing sampling and uploading temperature and humidity information to the monitoring platform.It supports LoRaWAN and LinkWAN. Users can set the sampling and reporting cycle through the PDA or platform. The default setting is sending the temperature and humidity information to the platform every hour.
1.2 Applications
- Logistics storage, warehouse
- Data center and service center
- Unattended factory, workshop
- Smart home, smart agriculture, smart building
1.3 Features
- The temperature and humidity measurement chip SHT20 is integrated internally, which can accurately measure the temperature and humidity of the environment.
- It has alarm functions such as low battery voltage and equipment failure.
- Support configuring parameters by wireless handheld device or platform.
- The RF modulates in LoRa mode, which can realize the advantages of long transmission distance, low standby power consumption, etc.
- The battery uses lithium battery with high energy density, which ensures the product to work for 5 consecutive years (Upload cycle 1 hour)
2. Charactoristics
2.1 Apperance
2.2 Electrical charactoristics
Operating voltage | 1.8~3.6V |
Operating temperature | -40℃ ~ 85℃ |
Working humidity | 0%~90%RH |
Emission current | <120mA@100mW (impedance matching) |
Receiving Current | <13mA |
Standby current | <5uA |
2.3 Radio charactoristics
Frequency range | 470-510MHz/863-928 MHz (optional) |
Transmitting power | 5~20 dBm |
Reception sensitivity | <-137dBm@292bps |
Antenna Type | built-in or external antenna optional |
Data transmission rate | 0.3~4.5 kbps |
Modulation mode | LoRa |
Supported LoRaWAN band | CN470/EU868/AU915/AS923/KR920 |
Supported LinkWAN band | CN470/AS923 |
2.4 Technical specifications
Temperature Measurement | Range | -40~85 ℃ |
| Precision | ± 0.3 ℃ |
| Resolution | 0.01 ℃ |
Humidity measurement | Range | 0%~90%RH |
| Precision | ±3%RH |
| Resolution | 0.04%RH |
2.5 Dimensions
3. Instructions for use
3.1 Installation
3.2 View uplink data
- Powered on SE71.
- Powered on the gateway and make sure it is connected to the network
- Use NMS to produce upstream data