4 Channel 4DI-DO 433M RS485 Relay Module,Wireless 4CH RS485 Bus Relay Module RF Master-Slave Networking Remote IO Swicth Board for PLC Industrial Equipment (24V)

Price: £35.77
(as of Jun 06, 2025 16:02:44 UTC – Details)

4 Channel 4DI-DO 433M RS485 Relay Module,Wireless 4CH RS485 Bus Relay Module RF Master-Slave Networking Remote IO Swicth Board for PLC Industrial Equipment


The N4RFA04 wireless RS485 relay module can read or control relay status via RS485 bus or 433M wireless, and can also read input status. The wireless is developed on the 433M band and can be used with the RT5BF01 wireless transmission module or with another N4RFA04 device using the Wireless Remote IO function.


In addition to the conventional RS485 control, users can use the N4RFA04 with the RT5BF01 wireless transmission module for data transmission, without the need to lay too many, too long signal transmission lines, the N4RFA04 module only needs to be powered on to achieve remote control of the upper computer, which is very convenient for users to operate the N4RFA04 device from a remote location, and effectively avoid signal lines due to rust, broken wires, poor contact, etc. It is also very convenient for the user to operate the N4RFA04 from a remote location.


The module can be set with 5 parameters via dip switches, simplifying the parameter setting process and making it very user-friendly. The parameters that can be set are the device address, RS485 switch, wireless switch, baud rate and channel, the settings of the dip switches can be found in the following selection table.


Radio frequency of the module = channel * 5.5MHz + 426MHz.


Note:
1. Due to the light and screen difference, the item’s color may be slightly different from the pictures.
2. Please allow 1-3cm differences due to manual measurement.


Supply voltage: DC 12V/24V ; Standby current: default 20mA;Turn off the wireless transceiver function 12mA; Size: 144*92*40.5MM ; Weight: 182g
Baud rate: 9600/19200/38400/115200, default 9600, N, 8, 1 ; Wireless operating frequency: 426MHz~508.5MHz, 16 frequency channels, channel spacing 5.5MHz, default 426MHz ; Transmitting power:20dBm; Reception sensitivity: -113dBm ; Wireless transmission distance: 800-1000m (unobstructed open space)
Communication interface: RS485/Wireless,work independently without interfering with each other ； Up to 63 modules can be used in cascade by modifying the 485 address (for more than 16 please use an RS485 repeater)
Application: PLC IO expansion boar; Smart Home,Home Automation ,Wiser Home; PTZ Camera; Security Monitoring; Identification system; IP Camera; LED Lamp Drivers; Automatic curtain control
4 Channel 4DI-DO 433M RS485 Relay Module,Wireless 4CH RS485 Bus Relay Module RF Master-Slave Networking Remote IO Swicth Board for PLC Industrial Equipment