DRAGINO LDS03A-EU868 Door Contact Sensor The Dragino LDS03A is a LoRaWAN open/close door sensor. It detects the opening/closing status of the door and connects to the IoT server via the LoRaWAN network. The user can see the door status, opening time and number of openings on the IoT server. The LDS03A is powered by an 8500mAh Li-SOCI2 battery. It can be used for up to 10 years.