Ultra-low power consumption Door Open/Close detect Door open/close statistics Datalog Feature Open Alarm Feature Multiply Sampling and one uplink Support Bluetooth v5.1 remote configure and update firmware Uplink on periodically Downlink to change configure 8500mAh Battery or Built-in 0.9w Solar Panel/3000mA Li-on Battery for long term use Nano SIM card slot for NB-IoT SIM * The Shipping Lead Time for Backorders is 7-10 Business Days. *
