Merge Plugin milesight_iot_em300_mld into Main

milesight-iot-em300-mld/CHANGELOG.md

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+# Changelog 
+
+## 1.0.0 - 2026-04-16
+
+- First version of plugin

milesight-iot-em300-mld/LICENSE.md

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+Copyright 2026 Thinger.io
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

milesight-iot-em300-mld/README.md

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+# EM300-MLD - Leak Sensor
+
+The EM300-MLD is an innovative LoRaWAN leak sensor that incorporates a flexible printed membrane for reliable water leakage detection. Featuring a 400 × 400 mm detection membrane, this sensor provides comprehensive monitoring of water leaks, spillage, or floor wetness in both residential and commercial applications. The device detects conductive liquids including water, weak acids, and weak bases, triggering an alarm when soaking liquid length exceeds 1.5 cm.
+
+## Features
+
+- **Wide Detection Area**: 400 × 400 mm printed leakage-detecting film (customizable size)
+- **LoRaWAN Connectivity**: Standard LoRaWAN protocol with support for multiple frequency bands (CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4)
+- **Long Battery Life**: Up to 10 years battery life with 4000 mAh ER18505 Li-SOCL2 battery (8000 mAh version optional)
+- **Data Storage**: Stores up to 1,000 historical records with retransmission support to prevent data loss
+- **Milesight D2D Protocol**: Enables ultra-low latency and direct control without gateways
+- **NFC Configuration**: Easy setup via mobile app
+- **IP67 Protection**: Suitable for harsh environments with operating temperature range of -30°C to 70°C
+- **Class A Device**: OTAA/ABP activation modes
+
+## Thinger.io Integration
+
+The EM300-MLD integrates seamlessly with Thinger.io through LoRaWAN network servers, enabling real-time monitoring of water leakage events, battery status, and sensor configuration management.
+
+## Requirements
+
+A LoRaWAN server is required to communicate the EM300-MLD into Thinger.io, some options are:
+
+- [The Things Stack](https://www.thethingsindustries.com/stack/)
+- [LORIOT](https://loriot.io/)
+- [ChirpStack](https://www.chirpstack.io/)
+
+Alongside, the corresponding plugin for the selected LoRaWAN server needs to be installed in your Thinger.io instance.
+
+## Get Started
+
+### Installation
+
+Look for the plugin in the [Thinger.io Plugin Store](https://marketplace.thinger.io/) and install it in your Thinger.io instance. Once the plugin is installed a new Product will be created for this device.
+
+### Configuration
+
+The Product is already preconfigured, check that the auto provision prefix matches the one selected in your LoRaWAN server plugin in Thinger.io, or change it to your desire.
+
+### Usage
+
+Start sending uplinks for autoprovisioning devices and buckets. This product also provides a predefined dashboard and downlinks.
+
+## Technical Specifications
+
+- **Wireless Technology**: LoRaWAN, Milesight D2D
+- **Antenna**: Internal
+- **Tx Power**: 16dBm (868 MHz) / 20dBm (915 MHz) / 19dBm (470 MHz)
+- **Sensitivity**: -137dBm @300bps
+- **Liquid Detection**: Conductive liquids (water, weak acid, weak base, etc.)
+- **Detection Film**: 400 × 400 × 0.25 mm printed membrane
+- **Trigger Condition**: Soaking liquid length > 1.5 cm
+- **Power Supply**: 1 × 4000 mAh ER18505 Li-SOCL2 Battery (8000 mAh optional)
+- **Battery Life**: Around 10 years (SF7, EU868 & US915)
+- **Operating Temperature**: -30°C to 70°C
+- **Humidity**: 0% to 95% (non-condensing)
+- **Ingress Protection**: IP67
+- **Dimensions**: 105.6 × 85.3 × 27 mm
+- **Weight**: 142g (with 1 battery)
+- **Cable Length**: 1000 mm (customizable)
+
+## Use Cases
+
+- Water leak detection in server rooms and data centers
+- Floor wetness monitoring in residential and commercial buildings
+- Spillage detection in industrial facilities
+- Basement and storage area water monitoring
+- HVAC system leak detection
+
+## Additional Resources
+
+Milesight resources can be found at:
+
+- [Product Page](https://www.milesight.com/iot/product/lorawan-sensor/em300-mld)
+- [Datasheet](https://resource.milesight.com/milesight/iot/document/em300-mld-datasheet-en.pdf)
+- [Thinger docs](https://docs.thinger.io)