母机和子机通过无线模块在10m的范围内上能相互通信，当信号不能正常传输

The master and slave can communicate with each other through a wireless module within a range of 10m. When the signal cannot be transmitted normally, sound and light alarms and vibration alarms are performed. The designed module mainly includes STC89C51 single chip microcomputer control module, NRF24L01 wireless sending and receiving module, sound and light alarm and vibration alarm module, light prompt circuit module and button search module

The mother and child can communicate with each other in the range of 10m through the wireless module, and when the signal cannot transmit properly, the sound and light alarm and vibration alarm are carried out. The modules of this design mainly include STC89C51 microcontroller control module, NRF24L01 wireless transmission and reception module, sound and light alarm and vibration alarm module, light prompt circuit module and key finder module.

The master and the slave can communicate with each other through the wireless module within the range of 10m. When the signal cannot be transmitted normally, the audible and visual alarm and vibration alarm will be carried out. The module of this design mainly includes STC89C51 single chip microcomputer control module, nRF24L01 wireless sending and receiving module, sound light alarm and vibration alarm module, light prompt circuit module and key search module<br>