The Dragino S31-LB is a LoRaWAN temperature and humidity sensor for Internet of Things solutions. It is used to precisely measure the ambient temperature and relative humidity and then upload them to the IoT server via the wireless LoRaWAN protocol.
The SHT31 temperature and humidity sensor used in the S31-LB is a fully calibrated, linearized and temperature-compensated digital output from Sensirion that offers high reliability and long-term stability. The SHT31 is housed in a waterproof, condensation-proof housing that allows for long-term use.
The LoRa wireless technology used in the S31-LB allows the device to send data and achieve extremely long ranges at low data rates. It offers spread spectrum communication with extremely long range and high interference immunity with minimal power consumption.
S31-LB supports temperature and humidity alarm, user can set temperature alarm for instant notification. S31-LB supports datalog function and can save the data when there is no LoRaWAN network and uplink when the network is restored.
S31-LB has a maximum of 3 sensors that measure a maximum of 3 temperature points.
S31-LB supports BLE configuration and OTA wireless update, which makes it easier for users to use.
S31-LB is powered by a 8500mAh Li-SOCI2 battery, designed for long-term use of up to 5 years.
Each S31-LB is pre-installed with a set of unique keys for LoRaWAN registrations. These keys are registered on the local LoRaWAN server and the connection is established automatically after switching on. Features: LoRaWAN 1.0.3 Class A Ultra-low power consumption External 3 meter SHT31 probe (for S31-LB) Measuring range -55°C ~ 125 °C temperature and humidity alarm Bands: EU868 Supports Bluetooth v5.1 and LoRaWAN remote configuration Supports OTA wireless update firmware Uplink at regular intervals Downlink to change configuration Waterproof IP66 housing 8500mAh battery for long-term operation Applications: Wireless alarm and security systems Home and building automation Automated meter reading Industrial monitoring and control Long range irrigation systems, etc. Specifications: Common DC Characteristics:Supply voltage: built-in 8500mAh Li-SOCI2 battery, 2.5v ~ 3.6v Operating temperature: -40 ~ 85°C Temperature sensor:Range: -40 to + 80°C Accuracy: ±0.2 @ 0-90 °C Resolution: 0.1°C Long-term deviation: < °C/year Humidity sensor: Range: 0 ~ 99.9% RH Accuracy: ± 2%RH ( 0 ~ 100 %RH) Resolution: 0.01% RH Long-term deviation: < %RH/year LoRa specification: Frequency range, Band 1 (HF): 862 ~ 1020 Mhz Max. +22 dBm constant RF output vs. RX sensitivity: up to -139dBm. Excellent blocking immunity Battery: Non-rechargeable Li/SOCI2 battery Capacity: 8500mAh Self-discharge: < / year @ 25°C Max. continuous current: 130mA Max. charging current: 2A, 1 second Power consumption: Sleep mode: 5uA @ 3.3v LoRa Transmission mode: 125mA @ 20dBm, 82mA @ 14dBm