Features: NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13//B18/B19/B20/B25/B28/B66/B71/B85 CAT-M1 / LTE-M Bands: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85 Ultra-low power consumption Door Open/Close detection Door open/close statistics Datalog Feature Open Alarm Feature Multiple Sampling and one uplink Supports Bluetooth v5.1 remote configuration and firmware updates Uplink via MQTT, MQTTs, TCP, or UDP Uplinks on periodically Downlink to change configuration 8500mAh Li/SOCl2 Battery(For DS03A-CB) Solar panel 3000mAh Li-ion battery(For DS03A-CS) Nano SIM card slot for NB-IoT SIM
