1PCS NEW Active buzzer module MCU low level trigger control board 3.3V-5V #YT

1PCS NEW USB to TTL serial port small board 5V/3.3V/1.8V level FT232RL module#YT

1PCS 1 solid state relay module 5V low level trigger 160mA relay with fuse

1PCS NEW Wide voltage 5V-30V trigger delay relay module timer delay switch #YT

1PCS NEW 1 relay 5V/12V/24V with optocoupler high and low level trigger #YT

1PCS NEW DY-HV20T module MP3 decoder board UART serial port I/O trigger #YT

1PCS NEW 1 relay module high level trigger FOR D1 mini WIFI expansion board#YT

1PCS One time delay relay 5V12V24V trigger timer control switch motor control#YT