Product Name: Temperature Humidity Sensor
Model Name: DSR-0820
DSR-0820 is a Low Energy temperature and humidity data logger, It can collect the temperature and humidity of the surrounding environment. Such data can be recorded as history data. Its characteristics are small-sized, low-weighted, easily portable, and highly accurate for wide use in cold chain logistics, archives, labs, museums, etc.
At present, there are three different types of temperature and humidity sensors, DSR-0820-1 is a high-performance product based on Bluetooth protocol, DSR-0820-2 is based on Zigbee protocol, and DSR-0820-3 is a standard performance product based on Bluetooth protocol.
DSR-0820-1 with the Bluetooth v5.0 technology and Nordic NRF52832 chip. Built-in wireless transceiver PA chip, with the maximum transmission power of up to 20dBm, to achieve ultra-long distance stable transmission of data, can store up to 12000 pieces of the temperature and humidity data.
DSR-0820-2 with the Zigbee 3.0 technology and Silconlab EFR32 series chip. the maximum transmission power up to 17.5dBm, to achieve ultra-long distance stable transmission of data. It can store up to 12000 pieces of the temperature and humidity data.
DSR-0820-3 with the Bluetooth v5.0 technology and Nordic NRF52810 chip. the maximum transmission power up to 4dBm, Suitable for use at close range.
- Refrigerated storage and transportation;
- Experimental (test) rooms;
- Pharmaceutical environment;
- Fresh transport.
1.3 Product feature
- High accuracy and stability;
- Ultra long-distance(300m) wireless transfer (except DSR-0820-3);
- Built-in highly sensitive temperature and humidity sensor SHT20 (Sensirion);
- Real-time display temperature and humidity;
- It can store 12000 pieces of temperature and humidity data (except DSR-0820-3);
- You can set the alarm temperature range;
- Can be set as normal storage temperature and humidity data interval and alarm storage temperature and humidity data interval;
- Can by OTA update version.
3. Product specification
|Item||DSR-0820-1 Bluetooth with PA||DSR-0820-2 Zigbee||DSR-0820-3 Bluetooth without PA|
|Signal transmission frequency||2.400 – 2.4835GHz||2.405GHz – 2.480GHz||2.400 – 2.4835GHz|
|Protocol standard||Bluetooth 5.0||Zigbee 3.0||Bluetooth 5.0|
|Send interval||2S, adjustable|
|Built in battery||Panasonic CR123A ,1400mAh /3V||CR2450 550mAh|
|Output power||20dBm, adjustable||17.5dBm,adjustable||4dBm,adjustable|
|Transmission distance||~300 meters, adjustable||~50 meters, adjustable|
|Storage||Can be save 12000 temperature and humidity||Not support|
|Battery life||~3 years(Depends on the mode of operation)||~1 year|
|Net weight||130 g|
|Outline size||70mm*40mm*40mm (main body)|
|Detect temperature range||-40℃~ +125℃|
|Operating temperature range||-25℃~ +60℃|
|Humidity detection range||0~100%RH|
|Temperature detection accuracy||±0.3℃|
|Humidity detection accuracy||±3%RH|
|IP protection||IP 68|
- Being close to a metal object will interfere with the signal, causing the signal to be weaken.
- Note the distance between DSR-0820 and the receiver to guarantee the accuracy of receiving.
- Keep away from corrosive objects.
5. Reference usage
- Temperature & humidity sensor paired to the Bluetooth gateway.
- Bluetooth Gateway gets the data from the sensor and sends the information to Cloud via Wi-Fi or LTE once per second.