dragino / lds02

Dragino LDS02

The LDS02 reports open/close state alongside battery telemetry. Decoder is an example — confirm bits with your firmware.

Decoder

Copy into ChirpStack or paste in the playground.

// Dragino LDS02 — LoRaWAN door/window sensor (example; FW variants exist)

function decodeUplink(input) {
  try {
    const bytes = input.bytes;
    const decoded = {};
    if (bytes.length >= 2) {
      const batRaw = (((bytes[0] << 8) | bytes[1]) & 0x3fff) / 1000;
      decoded.battery_v = batRaw;
    }
    if (bytes.length >= 3) {
      decoded.door_open = bytes[2] !== 0;
    }
    if (bytes.length >= 4) {
      decoded.installation = bytes[3];
    }
    return { data: decoded };
  } catch (err) {
    return { errors: [`Decoder error: ${err.message}`] };
  }
}