RFU-433 Quick Start v1.00, January 11, 2019 -------------------------------------
2
2. Pin Assignment
3. LED
LED
Behavior
Description
PWR
On
+10 ~ +30 V
DC
Power On
Off
Power Off
RF_Tx
On
RF is transmitting data
Off
RF is no data to transmit
RF_Rx
Always On
RF is receiving data, signal strength high
100ms Flash RF is receiving data, signal strength middle
500ms Flash RF is receiving data, signal strength low
Off
RF is no data to receive
4. Rotary Switch
Switch Name
No
Baud rate (bps)
No
Baud rate (bps)
RF Baud Rate
0
*
Same with COM
1
57600
2
38400
3
19200
4
9600
5
4800
6
2400
7
1200
8
650
9 ~ E reserved
F
Firmware version
* If COM rate is 115200 bps, the RF rate will set to 57600 bps.
Switch Name
No
Baud rate (bps)
No
Baud rate (bps)
COM Rate
0
115200
1
57600
2
38400
3
19200
4
9600
5
4800
6
2400
7
1200
8 ~ E reserved
Pin
Description
RxD
RS-232
TxD
GND
F.G.
Frame Ground
D-
RS-485
D+
GND
Power:
+10 ~ +30 V
DC,
1A
+Vs
