Data Sheet:
Power output: 50mW
Power supply: DC5. 5V or 3.1V
Receive current: 20mA
Transmitting current: 40mA
Sleep current: 20uA
Carrier frequency: 433MHz, 450MHz, 470MHz others
Communication connects: RS-232/RS-485/TTL selectable
Baud rate: 1200/2400/4800/9600/19200/38400/100kbps programmable
RF line-of-sight Range: 200m (BER = 10-5@9600bps)
400m (BER = 10-5@1200bps)
Size: 40 x 24 x 6mm (without antenna port)
Pin Definition:
|
Pin No.
|
Pin Name
|
Description
|
Level
|
Connection with terminal
|
Remarks
|
|
1
|
GND
|
Grounding of power supply
|
|
|
|
|
2
|
VCC
|
Power supply DC
|
+3.3-5.5V
|
|
|
|
3
|
RS232 TXD
|
Data transmitting
|
RS232
|
RXD
|
Red LED flashes when transmitting
|
|
TTL TXD
|
Data receiving
|
TTL
|
|||
|
RS485 A
|
RS485 A
|
-
|
|||
|
4
|
RS232 RXD
|
Data receiving
|
RS232
|
TXD
|
Green LED flashes when receiving
|
|
TTL RXD
|
Data receiving
|
TTL
|
|||
|
RS485 B
|
RS485 B
|
-
|
|||
|
5
|
DGND
|
Digital grounding
|
|
|
NC
|
|
6
|
NC
|
Factory testing
|
|
|
NC
|