I want to use two PIRs and two JSN-SR04T 2.0, do you know if i can put them ~5/6 meters away from the Arduino?
The PIRs should work fine but the JSN-SR04T i dont Know, can i put the board of the JSN-SR04T close to it and one cable (5/6meters) from that board to the Arduino?
Maybe but it would be environment sensitive. You can use driver chips and not worry about the distance. A inexpensive trick I use s to place RS485 transceivers on each, one pair for for transmit and another pair for receive. With this you can be 1000 meters apart. Just be sure to use a common ground.