Bk-m33-bt-v2.pcb [updated] Link

Typically supports 3.7V (Lithium battery) or 5V (USB/regulated) power sources. 2. Performance & Installation Insights Antenna Sensitivity:

According to user insights from AliExpress, several factors are critical when working with the BK-M33-BT-V2.PCB: Bk-m33-bt-v2.pcb