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14	14
15	15	= 1. Introduction =
16	16
17		-== 1.1 What is S31x-LB LoRaWAN Temperature & Humidity Sensor ==
	17	+== 1.1 What is S31x-NB NB-IoT Temperature & Humidity Sensor ==
18	18
19	19
20		-The Dragino S31x-LB is a (% style="color:blue" %)**LoRaWAN Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the (% style="color:blue" %)**surrounding environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via LoRaWAN wireless protocol.
	20	+The Dragino S31-NB and S31B-NB are **NB-IoT Temperature and Humidity Sensor** for Internet of Things solution. It is used to measure the surrounding **environment temperature and relative air humidity precisely**, and then upload to IoT server via NB-IoT network*.
21	21
22		-The temperature & humidity sensor used in S31x-LB is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing**(%%) for long term use.
	22	+The temperature & humidity sensor used in S31-NB is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a **waterproof anti-condensation casing** for long term use.
23	23
24		-The LoRa wireless technology used in S31x-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
	24	+S31-NB supports different uplink methods include **TCP, MQTT, UDP** for different application requirement. and Support Uplinks to various IoT Servers.
25	25
26		-S31x-LB supports (% style="color:blue" %)**Temperature & Humdity alarm feature**(%%), user can set temperature alarm for instant notice. S31x-LB supports Datalog feature, it can save the data when there is no LoRaWAN network and uplink when network recover.
	26	+S31-NB is powered by **8500mAh Li-SOCI2 battery**, It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period and uplink method. Please check related Power Analyze report).
27	27
28		-S31x-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
	28	+*make sure you have NB-IoT coverage locally.
29	29
30		-S31x-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
31	31
32		-Each S31x-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
	31	+[[image:1692411831805-116.png]]
33	33
34	34
35	35	== 1.2 ​Features ==
36	36
37	37
38		-* LoRaWAN 1.0.3 Class A
	37	+* NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
39	39	* Ultra-low power consumption
40		-* External 3 meters SHT31 probe (For S31-LB)
41		-* Measure range -55°C ~~ 125°C
	39	+* External 3 meters SHT31 probe (For S31-NB)
	40	+* Measure range -40°C ~~ 85°C
42	42	* Temperature & Humidity alarm
43		-* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
44		-* Support Bluetooth v5.1 and LoRaWAN remote configure
45		-* Support wireless OTA update firmware
	42	+* Multiply Sampling and one uplink
	43	+* Support Bluetooth v5.1 remote configure and update firmware
46	46	* Uplink on periodically
47	47	* Downlink to change configure
48	48	* 8500mAh Battery for long term use
	47	+* Nano SIM card slot for NB-IoT SIM
49	49
50	50
51	51	== 1.3 Specification ==