Milesight IoT Ultrasonic Distance/Level Sensor, EM400-UDL-N03GL-C100

2 * 9000mAh ER26500 Li-SOCL2 Batteries Battery Life: TCP / UDP: Around 10 Years MQTT / AWS: Around 5 Years (4 Times Report per Day, per Report Includes 12 Packages with 30-min Collection Interval, 25°C) Selective Probes Vary from 25 to 1000 cm for Multiple Applications Equipped with NTC Temperature Sensor for the Detection and Alarm of Burning Equipped with GNSS Positioning for Tracking Support Cumulative Number Report Function for Power Saving NFC Enabled Resolution: 1 mm Material: PC + ABS Flame Retardant Grade: V0 GNSS PositioningParameters: Longitude / Latitude Resolution: 0.000001 NB-IoT 0.25 ~ 10 m ± (1 + 0.3% * S) cm, S = Distance (- 15°C ~ 60°C)