Description The water immersion wireless sensor is based on the advanced Lora spread spectrum technology, 470~510MHz global free radio frequency ( 868MHz, 923MHz free radio frequency can also be used ) , powered by DC7~24V DC power supply, optional LCD screen to display sensor data, It can also be equipped with a relay alarm output of 1 channel, no wiring is required, and the construction is convenient. The water immersion sensor adopts the principle of liquid conduction, uses electrodes (or special water leakage sensing rope) to detect whether there is water, and wirelessly uploads the alarm signal through the switch output . Compared with the traditional 433MHz FSK modulation technology, Lora spread spectrum technology takes into account the communication distance, anti-interference, and low power consumption, ensuring a longer communication distance and stronger penetration ability (commonly known as the king through walls, which can penetrate 5~12 floors) , more suitable for obstacles or indoor applications, and can be widely used in the field of Internet of Things atmospheric environment monitoring such as smart homes, factories and commercial buildings.

Supply voltage: DC 7 ~24V

Maximum power consumption: 10mA

Display mode: LCD LCD screen (option)

LCD screen specifications: 0802 8 characters per line, 2 lines of display

Alarm, control output (optional): 1 relay, contact capacity (resistive): 3A/AC220V, DC24

Working environment: -20~50 degrees, 15~90%RH (no condensation)

Storage environment: -25~60 degrees

Working pressure: 0.9~1.1 atmosphere

LoRaWAN working frequency band: European 863-870MHz (EU868),US 902-928MHz (AS923) etc...

Communication rate: SF12~SF7 , 250~5500bps programmable .

Networking method: follow the LoraWAN protocol stack

Working mode: CLASS A:(ALL), CLASS B:(BEACON), CLASS C:(CONTINOUS)

Communication method: data transparent transmission

Data format: default 1, 8, 1 , SF10 (1 start bit, 8 data bits, 1 stop bit, no parity, SF10 baud rate)

Collection frequency: remote setting, default 1 minute

Receive Sensitivity: -1 40 dBm

Communication distance: open outdoor > 2000 meters (external antenna, 20dB m , SF10 ) ; the longest distance is 6KM, (external antenna, 20dB m , SF12 )

Terminal Class: Slave

Node address: 0~ 256 , DIP switch hardware setting

Networking method: star wireless network