5V 12V 24V 8ch RS232 IO Control Switch Relay PLC expansion board DB9 Serial port PC Com Module for Arduino UNO MEGA NANO

-15%

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1

1

-2%

Db9 female/male rs232 uart switch board dc 12v 232 relay module for plc led motor

0

1

-5%

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0

2

-0.5%

16 channel relay module db9 pc com uart female interface serial port remote control switch rs232 r223c16 delay relay dc 12v

0

0

-5%

Dc 12v 16 channel relay module db9 pc com uart female interface serial port remote control switch rs232 r223c16 delay relay

0

0

-0.8%

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0

0

Dc 5v 12v 2 channel rs232 serial port control relay switch board scm interface pc relays db9 module

2

10

4.0

Incomplete data

8ch rs232 ttl232 io control switch board com db9 serial port for momentary self-locking interlock latch delay relay module

0

1

-6%

Dc 12v pc com db9 rs232 serial port delay relay arm mcu uart remote control switch board

1

1

5.0

16ch dc 12v serial port db9 uart rs232 relay module for plc pc com 3d printer led home lighting motor

0

0

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0

0

-12%

Dtmf audio remote relay kit mt8870 phone voice decoder control dc 5v 12v 24v 48v voltage for_arduino due uno mega raspberry pi

0

3

-3%

Dc 12v 16 channel relay module db9 pc com uart female interface serial port remote control switch rs232 r223c16 delay relay

0

1

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1

3

-0.7%

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1

0

4 channel 5v relay shield module, four channel relay control board relay expansion board for arduino uno r3 mega 2560

1

1

5.0

2 channel relay module serial port rs232 relay switch board tb351 uart protocol db9 interface remote control board

0

0

-9%

Incomplete data

Max3232 rs232 to ttl serial port converter module db9 connector max232 for arduino

1

0

-7%

Incomplete data

Max3232 rs232 to ttl serial port converter module db9 connector max232 for arduino

0

0

Max3232 rs232 to ttl serial port converter module db9 connector max232 for arduino

0

1

Incomplete data

Max3232 rs232 to ttl serial port converter module db9 connector max232 for arduino

0

1

Incomplete data

Max3232 rs232 to ttl serial port converter module db9 connector max232 for arduino

0

1

-2%

Rs232/rs485 serial port control 32 relay module control switch board io board

3

1

-10%

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1

6

-2%

4 channel 5v relay shield module 4 channel relay control board expansion board for arduino r3 mega 2560

1

2

-14%

Dr21a01 dc 5v dpdt signal relay module dual channel selector switch board for arduino uno mega2560 motor stereo audio switcher

0

0

-3%

16 channel rs232 relay db9 female interface serial remote control switch r223c16 smart relay module dc 12v 10a for fan led light

0

0

Mini automatic control sp485 ic 5v rs485 to ttl 232 module uart serial port to 485 bus converter for arduino uno mega mcu avr

1

1

Max3232 rs232 to ttl serial port converter module female db9 connector max232 flashing board for arduino

1

3

5.0

-10%

Max3232 rs232 to ttl serial port converter module db9 connector max232 diy kit electronic pcb board module

2

9

5.0

5v 2 channel rs232 serial db9 control relay module switch board scm pc relays 9v-12v

0

0

-2%

Max3232 rs232 to ttl serial port converter module db9 connector max232 diy kit electronic pcb board module

1

3

5.0

4 channel 5v relay shield module, four channel relay control board relay expansion board for arduino uno r3 mega 2560

3

10

5.0

-3%

Dc 5-24v 2a self-locking bistable reverse polarity switch controller relay board for arduino uno mega2560 stm32 nodemcu sensor

1

3

-1%

10 pcs dc 5v 12v 24v multifunction delay relay time switch turn on/off plc module

0

0

-13%

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1

7

5.0

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0

1

-5%

2 channel serial port relay module dc 5v dc 12v pc computer usb rs232 db9 rs485 uart remote control switch board for smart home

1

1

Dc 12v 2 channel db9 female/male rs232 uart remote control switch board serial port relay module

1

6

5.0

Dc 6-24v rs485 rs232 ttl rtu control uart control module 8 channel io control relay switch board support plc for arduino

1

1

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1.8 inch tft lcd display serial port module 160*128 st7735s with pcb backplane io interface for arduino nano 1602 5110 3.3v 5v

2

6

Dc 5v 12v 2 channel rs232 serial port control relay switch board scm interface pc relays db9

0

1

-22%

Dc 12v 2 ch rs485 relay board uart serial port switch module modbus at command control for plc smart home automated industry

2

7

5.0

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100pcs new ds1302 real time clock module for arduino uno mega development board diy starter kit

1

0

-3%

4 channel 5v relay shield module, four channel relay control board relay expansion board for arduino uno r3 mega 2560

4

2

-1%

Diymore nano io terminal adapter module for arduino controller v1.0 diy kit nano io expansion board

1

5

5.0

-4%

Ce005*1+yc064*1 dtmf audio remote relay kit mt8870 phone voice decoder control dc 5v 12v 24v 48v voltage due uno mega raspberry

0

0