Description NDDS75 NB-IoT Distance Detection Sensor Details The Dragino NDDS75 is aNB-IoT Distance Detection Sensorfor Internet of Things solution. It is designed to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses ultrasonic sensing technology for distance measurement, and temperature compensation is performed internally to improve the reliability of data. The NDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc. It detects the distance between the measured object and the sensor, and uploads the value via wirele to IoT Server via NB-IoT Network. NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage. NDDS75 supports different uplink methods includeTCP, MQTT, UDP and CoAPfor different application requirement. NDDS75 is powered by8500mAh Li-SOCI2 battery, It is designed for long term use up to 5 years. (Actually Battery life depends on the use environment, update period uplink method) To use NDDS75, user needs to check if there is NB-IoT coverage in local area and with the bands NDDS75 supports. If the local operate support it, user needs to get a NB-IoT SIM card from local operator and install NDDS75 to get NB-IoT network connection. Features: NB-IoT Distance Sensor Node Flat object range 280mm - 7500mm Accuracy: (1cm+S*0.3%) (S: Distance) Measure Angle: 40 Distance Detection by Ultrasonic technology Ultro low power consumption NB Bands: B1/B3/B8/B5/B20/B28Uplink via MQTT,TCP,CoAP or UDP AT Commands to change parameter IP66 Waterproof Enclosure Uplink on periodically Temperature Compensation for measurement Applications: Horizontal distance measurement Liquid level measurement Parking management system Object proximity and presence detection Intelligent trash can management system Robot obstacle avoidance Automatic control, sewer Bottom water level monitoring LDDS75-XX:XX: the default frequency bandEU433: Default frequency band EU433CN470: Default frequency band CN470EU868: Default frequency band EU868IN865: Default frequency band IN865KR920: Default frequency band KR920AS923: Default frequency band AS923AU915: Default frequency band AU915US915: Default frequency band US915