433Mhz transmitter, used with the receiver mx-rm-5v
5V
Transmitter Model: FS1000A Transmitting Frequency: 433.92MHz, 315MHz, 330MHz — https://www.componentsinfo.com/fs1000a-433mhz-rf-transmitter-xy-mk-5v-receiver-module-explanation-pinout/
Transmitter Model: FS1000A Transmitting Frequency: 433.92MHz, 315MHz, 330MHz
— https://www.componentsinfo.com/fs1000a-433mhz-rf-transmitter-xy-mk-5v-receiver-module-explanation-pinout/