Components

The temperature & humidity sensor used in LSN50v2-S31 is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides strong reliability and long-term stability. The SHT31 is fixed in a waterproof anti-condensation casing for long-term use. The LSN50v2-S31 supports a temperature and humidity alarm feature, the user can get an alarm for instant notice. LSN50v2-S31 is powered by an 8500mAh Li-SOCI2 battery, It is designed for long-term use up to 10 years. Each LSN50v2-S31 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to the local LoRaWAN server and it will auto-connect after power on. Features LoRaWAN v1.0.3 Class A Ultra-low power consumption External 3m SHT31 probe Measure range -40°C ~ 80°C Temperature alarm AT Commands to change parameters Uplink on periodically or Interrupt Downlink to change configure Applications Wireless Alarm and Security Systems Home and Building Automation Automated Meter Reading Industrial Monitoring and Control Long-range Irrigation Systems Temperature Sensor Range: -40 to + 80 °C Accuracy: ±0.2 @ 0-90 °C Resolution: 0.01 °C Long Term Shift: <0.03 °C/yr Humidity Sensor Range: 0 ~ 99.9% RH Accuracy: ± 2% RH (0 ~ 100% RH) Resolution: 0.01% RH Long Term Shift: <0.25% RH/yr Downloads Datasheet User Manual Firmware

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The LDS02 is powered by 2x AAA batteries and targets long-time use, these two batteries can provide about 16,000 ~ 70,000 uplink packets. After the batteries run out, the user can easily open the enclosure and replace them with 2 common AAA batteries. It will send periodically data every day as well as for each door open/close action. It also counts the door open times and calculates the last door open duration. The user can also disable the uplink for each open/close event, instead, the device can count each open event and uplink periodically. It also has the open alarm feature, the user can set this feature so the device will send an alarm if the door has been open for a certain time. Each LDS02 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to the LoRaWAN server and it will auto-connect after power on. Features LoRaWAN v1.0.3 Class A SX1262 LoRa Core Door Open/Close detect 2 x AAA LR03 Batteries Door open/close statistics AT Commands to change parameters Uplink on periodically and open/close action Open duration alarm Downlink to change configure Applications Wireless Alarm and Security Systems Home and Building Automation Industrial Monitoring and Control

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LWL01 is powered by a CR2032 coin battery, in a good LoRaWAN Network Coverage case, it can transmit as many as 12,000 uplink packets (based on SF 7, 14 dB). In poor LoRaWAN network coverage, it can transmit ~ 1,300 uplink packets (based on SF 10, 18.5 B). The design goal for one battery is up to 2 years. User can easily change the CR2032 battery for reuse. The LWL01 will send periodically data every day as well as for water leak event. It also counts the water leak event times and also calculates last water leak duration. Each LWL01 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on. Features LoRaWAN v1.0.3 Class A SX1262 LoRa Core Water Leak detect CR2032 battery powered AT Commands to change parameters Uplink on periodically and water leak event Downlink to change configure Applications Wireless Alarm and Security Systems Home and Building Automation Industrial Monitoring and Control

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The temperature sensor used in LSN50v2-D20 is DS18B20, which can measure -55°C ~ 125°C with accuracy ±0.5°C (max ±2.0 °C). The sensor cable is made by Silica Gel, and the connection between the metal probe and cable is double compressed for waterproof, moisture-proof, and anti-rust for long-term usage. The LSN50v2-D20 supports a temperature alarm feature, the user can set a temperature alarm for instant notice. It is powered by an 8500mAh Li-SOCI2 battery, It is designed for long-term use up to 10 years. Each LSN50v2-D20 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to the local LoRaWAN server and it will auto-connect after power on. Features LoRaWAN v1.0.3 Class A Ultra-low power consumption External DS18B20 Probe (default 2meters) Measure range -55°C ~ 125°C Temperature alarm AT Commands to change parameters Uplink on periodically or Interrupt Downlink to change configure Applications Wireless Alarm and Security Systems Home and Building Automation Automated Meter Reading Industrial Monitoring and Control Long-range Irrigation Systems

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The LSN50 wireless part is based on SX1276/SX1278 allows the user 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. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on. The LSN50 MCU part uses STM32l0x chip from ST, STML0x is the ultra-low-power STM32L072xx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance ARM® Cortex®-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals. The LSN50 is an open-source product, it is based on the STM32Cube HAL drivers and lots of libraries can be found on the STM site for rapid development. Features STM32L072CZT6 MCU SX1276/78 LoRa Wireless Modem Pre-load with ISP bootloader I2C,LPUSART1,USB 18 x Digital I/Os 2 x 12bit ADC; 1 x 12bit DAC MCU wakes up by UART or Interrupt LoRa™ Modem Preamble detection Baud rate configurable LoRaWAN 1.0.2 Specification Software base on STM32Cube HAL drivers Open-source hardware / software IP66 Waterproof Enclosure Ultra-Low power consumption AT Commands to setup parameters 4000mAh Battery for Long term use Applications Wireless Alarm and Security Systems Home and Building Automation Automated Meter Reading Industrial Monitoring and Control Long-range Irrigation Systems LoRa Spec 168 dB maximum link budget. +20 dBm - 100 mW constant RF output vs. +14 dBm high-efficiency PA. Programmable bit rate up to 300 kbps. High sensitivity: down to -148 dBm. Bullet-proof front end: IIP3 = -12.5 dBm. Excellent blocking immunity. Low RX current of 10.3 mA, 200 nA register retention. Fully integrated synthesizer with a resolution of 61 Hz. FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation. Built-in bit synchronizer for clock recovery. Preamble detection. 127 dB Dynamic Range RSSI. Automatic RF Sense and CAD with ultra-fast AFC. Packet engine up to 256 bytes with CRC. Built-in temperature sensor and low battery indicator. MCU Spec MCU: STM32L072CZT6 Flash: 192KB SRAM: 20KB EEPROM: 6KB Clock Speed: 32Mhz Absolute Maximum Ratings VCC: 0.5 V ~ 3.9 V Operating Tempature: -40°C ~ 85°C I/O pins: 0.5 V ~ VCC+0.5 V Common DC Characteristics Supply Voltage: 1.8 V ~ 3.6 V Operating Tempature: -40°C ~ 85°C I/O pins: STM32L072CZT6 datasheet Power Consumption STOP Mode: 2.7 μA @ 3.3 V RX Mode: 7.2 mA TX Mode: 125 mA@ 20 dbm Battery Li/SOCI2 unchargable battery Capacity: 4000 mAh Self Discharge: < 1% / Year @ 25°C Max continuously current: 130 mA Max boost current: 2 A, 1 second

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