សៀវភៅណែនាំអំពីប្រព័ន្ធហៅទូរសព្ទឥតខ្សែ JIAXING LK-QCB09
Wireless Calling System Functional Diagram Parameter* Transmitter Pager Input Power DC12V/2A Battery Li-ion 3.7V 200mAh Frequency 433.92MHz Frequency 433.92MHz Transmit Power +26dBm Standby Current <15mA Standby Power <1W Standby Duration 20h Modulation Type OOK Sensitivity -115dBm Slots 8 Charging Slots…