The 2022 local aggregated outbreak occurred in multiple locations across the country, mainly with Omicron variant strains, which are fast spreading and insidious. Under the complex and severe prevention and control situation, the pressure of national epidemic prevention and control has increased, and isolation and home observation have become one of the most common and effective means to interrupt the risk of transmission of the new coronavirus in epidemic prevention and control. But the pain point is that isolation and home observation require dynamic management to ensure the effectiveness, which requires a lot of manpower and management costs.
 
The smart door magnetic device, once designed specifically for home security, is cleverly used in this special application scenario and becomes the "black technology" to achieve accurate epidemic prevention.

Equipped with BHDC HHM302 and HHM30D2, the door magnet products have low power consumption, long standby time, high online rate, easy installation and deployment, and can be quickly applied to the precise prevention and control of epidemics.

BHDC NB-IoT series modules are available in LCC 16*18mm (HHM30D2) and LCC 17.7*15.8mm (HHM302), which are compatible with the industry's mainstream packages. It has excellent single success rate under weak signal to ensure the accuracy and timeliness of monitoring. As a super cost-effective LPWA module, it can be widely used in smart security, smart firefighting, wireless meter reading and other scenarios to meet customers' needs for "low rate, wide coverage, large connection and small data" communication connection.