Dragino LSN50 User Manual

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LSN50 LoRa Sensor Node User Manual 35 / 60
Low Power Case:
● Radio Parameter: SF7, 125kHz, 20dbm
● Transmit interval: 15 minutes.
● Payload: 8 Bytes.
High Power Case:
● Radio Parameter: SF10, 125kHz, 20dbm
● Transmit interval: 15 minutes.
● Payload: 8 Bytes.
To simplify the calculation, we can:
● Combine oil sensor and DS18B20 sampling energy together to 751ms@8.64ma
● Combine the two RX windows together.
There is a power consumption tool for easy analysis. Below is the analysis result.
Note: Ignore the 18 year result, because the battery has a max 2% discharge per year.
2.8.3 Battery Note
The Li-SICO battery is designed for small current / long period application. It is not good to
use a high current, short period transmit method. The recommended minimum period for
use of this battery is 5 minutes. If you uses a shorter period time to transmit LoRa, then the
battery life may be decreased.
2.8.4 Replace the battery
You can change the battery in the LSN50. On the main board, there is a diode (D1) between
the battery and the main circuit. If you need to use a battery with less than 3.3v, please

Dragino LSN50 Specifications

General

Brand	Dragino
Model	LSN50
Category	Accessories
Language	English