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Product Name: 868MHz RS232 DB9 COM Female Wireless Transceiver Serial Data Long-Distance Transmission Module for PLC Relay Meter Reading Sensor
Working voltage: 4.8V-9V(2A Power Supply is Recommended);
Interface : RS232
Frequency: 868MHz
Transmit power: -40~+20dBm;
Receiver sensitivity: -114dBm;
Operating temperature: -25℃~+75℃;
Transparent transmission mode baud rate :1200 2400,4800,9600(Default),19200,38400,57600,115200;
Open ground Transmission distance : 500M
Size(without antenna): 80x50x31mm
Weight(without antenna):50g
For more information, please contact me
Recommend to buy more than 2pcs!!!
The three products of RS485/RS232/USB only have different interfaces and the same functions. Can communicate with each other, mixed use:
RS485<->RS485, RS232<->RS232,USB<->USB,
USB<->RS485, USB<->RS232, RS485<->RS232
How to use (>=2pcs):
1 2PCS,Module 1 and Module 2 send data to each other.
2 3PCS,Module 1 sends data, module 2 acts as a repeater (multiple repeaters can be used), and module 3 receives data; delay sending and receiving distance.
3 >=3PCS,One as master device, the other as will be as slave device.
the way they work as well as wired RS485 bus. Master device transmit data, Slave devices all receive data.Any slave device transmit data, master device and the other slave devices can receive .When ever only allowed one device (master or slave) to transmit data.
Wireless Meter Reading,
Industrial Control,
Wireless Sensor Network,
Telemetry Equipment
PTZ Camera
Modbus modbus temperature sensor
LED Controller
Wireless meter ;
Smart Home,Home Automation ,Wiser Home;
Access control ;
Identification system ;
Data collection;
IT household appliance ;
Intelligence household appliance;
Baby monitoring system;
Thermometer
This is a brief description of AT commands, please refer to the ''RT4AE01 AT Command Detailed Description'' manual for detailed descriptions
Factory serial port parameters: 9600 8 N 1
Send ''AT+ENABLE=1'' within three minutes after power on to enter the AT command configuration mode
Configuration completed: send ''AT+ENABLE=0'' to exit the AT command configuration mode
1 ID
Query : AT+ID?
Set : AT+ID=xxx (000-254)
2 Software version information
Query : AT+INF?
3 working channels
Query : AT+FREQ?
Set : AT+FREQ=xxx(000-254)
The frequency of data transmission is 430MHz+xxx*0.1MHz (xxx is the selected working channel)
4 baud rate
Query : AT+BAUD?
Setting : AT+BAUD=x(0-7)
0:1200 1:2400 2:4800 3:9600 (default) 4:19200 5:38400 6:57600 7:115200
5 parity bits
Query : AT+PARITY?
Setting : AT+PARITY=x(0-2)
0: No parity 1: Even parity 2: Odd parity
6 Transmit power
Query: AT+POWER?
Setting: AT+POWER=x(0-9)
0:-40dBm 1:-16dBm 2:-10dBm 3:-5dBm 4:0dBm 5:+5dBm 6:+10dBm 7:+15dBm 8:+18dBm 9:+20dBm
7 Factory reset
Set: AT+RESET
8 Reboot:
Settings: AT+REPOWER
* Delivery Time.
We need 1-2 days to process your order before shipping.There are two shipping methoed. Fast Delivery: The delivery time for US, European countries the delivery will take 3-5 days.Slow Delivery: The delivery time for US, European countries the delivery will take 10-15 days.
* Tracking information.
After we ship package, customer receive automatic email with tracking details.
* Lost Package Policy.
If a package did not arrive in 4 weeks after the shipping date, then this package is treated as Lost. In this case a new package will be shipped to the customer provided we are able to give the same items as those purchased by the customer. If we are not able to provide the same items to substitute the lost ones we will either propose to the customer similar items or refund their cost as it will be mutually agree with the customer. If one or more items neither the same nor similar are available to be shipped, the customer can request to cancel the order entirely, thus the total cost of the order including shipping and handling cost will be fully refunded.
