433Mhz RF Link Kit interfaces voltage


I just bought the 433Mhz RF Link Kit, and will try and connect it to a PIC16HV540 for transmission, as power supply available for my project, on transmission side, is 12V.

I understood that transmitter Input Voltage range is 3 to 12V from the web page… But I can’t figure out if the said input voltage refers to VCC pin only, or also to data pin ?

In other words, I guess Vcc pin can accept 3V to 12V, but what are the voltage specification for DATA pin ?