R4W9B12 4CH MOS Tube Output Control Board – RS485 Modbus RTU PLC Expansion Module with 3A NPN Output for LED Dimmer Valve Driver DC 6-25V

1 Working voltage: DC 6-25V


2 Working current: 10-15MA


4 Compatible with two command control modes, AT command and MODBUS RUT command


5 AT command: ON/OFF/Self-locking/Inter-locking/Momentary/Delay, delay time 0.1-9999.9 seconds


6 MODBUS RTU command supports 01/03/05/06/15/16 function code



7 In MODBUS command mode, up to 247 devices can be used in parallel



8 With RS485 and RS232 (TTL) dual bus interface, the two interfaces can be used at the same time


9 4-channel 3A MOS tube output (O1-O4)



10 8-channel 5V TTL level output pins (O5-O12), low level (default)/high level output


11 Size: 96.5*35*15MM



12 Weight: 27 grams



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1 With RS485 and TTL232 interfaces, the two interfaces are independent of each other and can be used at the same time.


2 4-channel MOS tube output (O1-O4), the maximum driving capacity is 3A, NPN low-level output, can drive resistive and inductive loads such as LED relays, low-power motors, and solenoid valves.


3 8-channel 5V TTL port output (O5-O12), the maximum driving capacity is 10MA. Default low level output (NPN), can be set to high level output (PNP) by command


4 In order to work stably, the power supply power must be greater than 2 times the load power, if it is an inductive load, more than 3 times


5 By default, AT command and Modbus RTU command can be used at the same time. The two pads of M0 are welded together, and only Modbus RTU command can be used.