Specification:
Item Type: Relay Module
Standby Current: Default 20mA, turn off transceiver function 12mA
Baud Rate: 9600 19200 38400 115200, default 9600, N, 8, 1
Working Frequency: 426MHz-508.5MHz, 16 channels, channel interval 5.5MHz, default 426MHz
Power: 20dBm
Receiving Sensitivity: -113dBm
Distance: 800-1000 meters (Unobstructed open space)
Product Size: Approx. 144 x 92 x 40.5mm / 5.7 x 3.6 x 1.6in

How to Use:
Communication interface can be installed: RS485 , working independently and not interfering with each other;You can cascade up to 63 modules by modifying the 485 address (use RS485 repeaters for more than 16).

packing list:
1 x Relay Module
1 x Antenna

Notice:
In addition to the conventional RS485 control, users can also use N4RFA04 with RT5BF01 module for data without laying too many and too long lines. The N4RFA04 module only needs to be powered on to realize remote control. It is very convenient for users to remotely operate N4RFA04 equipment, effectively avoid , broken line, poor , etc. of the line, and also very convenient for users to operate N4RFA04 from a remote place.