RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.00
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10
Terminal Block
LED Indicator
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
Pin
Description
RxD
RS-232
TxD
GND
F.G.
Frame Ground
D-
RS-485
D+
GND
Power:
+10 ~ +30 V
DC,
1A
+Vs