8ch RS232 TTL232 IO Control Switch Board Com DB9 Serial port for Momentary Self-locking Interlock Latch Delay Relay Module

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

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

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-3%

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

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1

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

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0

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

1

6

5.0

-5%

R221a08 12vdc 8ch serial port relay db9 uart rs232 switch for control home lighting electric water heater

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2

R421c32 dc 12v 32 channels rs485 delay relay module rtu protocol serial port remote control switch plc control board

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4pcs multifunction rs485 ttl232 modbus rtu module npn pnp io control switch for 16ch 5v 12v 24v relay board plc

3

4

5.0

-0.8%

R221a08*2 2pcs 12vdc 8ch serial port relay db9 uart rs232 switch for control home lighting electric water heater

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0

Dc 7v-38v 16 channel serial port relay module board 6ch relay switch control for smart home 12v 24v

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1

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

2

10

4.0

-3%

2x 12vdc 16 channels rs232 db9 pc com uart delay relay smart switch board

1

1

Incomplete data

Dc 5v 12v 24v 4ch ios android bluetooth-compatible switch board latch interlock delay momentary multifunction relay module

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0

-4%

15000w 110v 220v 6ch rf relay module rf remote control relay board remote controller switch momentary self locking interlock

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0

Relay module r223c16 16-channel relay board db9 relay module female interface serial port smart module 10a / 250vac

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0

-2%

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

3

1

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

1

1

-7%

Dc 5v 12v 24v 4ch ios android bluetooth-compatible switch board latch interlock delay momentary multifunction relay module

1

0

Incomplete data

4ch dc 6v-24v flip-flop latch relay module bistable self-locking electronic switch low pulse trigger board button mcu io control

0

1

Incomplete data

Dc 5v 12v 24v 8 channels multifunction power conditioner/sequencer switch interlock latch self-locking momentary relay module

1

1

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

0

1

2 in 1 rs232 & ttl232 interface serial port relay uart switch pc usb mcu for smart home garage door car alarm farm motor

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0

220v 433mhz 4 channel wifi relay switch module for phone app wireless remote control self-lock interlock relay relay switch

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0

-1%

5x 4ch 5v flip-flop latch relay module bistable self-locking electronic switch low pulse trigger board

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0

-3%

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

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1

-1%

2 channel relay module dc 5v 30a high-low level trigger control relay module relay switch board ac 100v-250v

1

0

-6%

Dc 12v 8 channels multifunction timer delay relay board time switch timing loop interlock self-locking momentary bistable

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0

-1%

4ch 5v flip-flop latch relay module bistable self-locking electronic switch low pulse trigger board button mcu io control

1

3

5.0

Usb relay module mcu pc usb smart control switch jog self-locking serial port intelligent control relay module

0

0

30a 2 channel relay module high-low level trigger control relay module relay switch board dc 5v/ac 100v-250v 110v 220v

1

0

-4%

Dc5v/6-24v relay module self-locking dpdt relay module double pole double throw bistable relay switch board for arduino

0

1

Rs485 16 channel relay module rtu relay board plc controller serial port switch for arduino dc 12v

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0

Dc 12v realy 16 channel rs485 relay module relay board plc controller port switch 485 high quality, voltage relay, high quality and brand new, low power, general purpose

4

9

-4%

Dc 5v 12v 24v 2 channel multi function relay module time delay relay self lock cycle timing relay module timer control switch

1

0

Incomplete data

Ce007 dc 12v 4 channel multifunction cycle delay timer relay module for timing loop interlock self-locking

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1

-0.5%

Incomplete data

Ce039 dc 12v 4 channel rs232 relay board pc usb uart db9 remote control switch for smart home garage door car alarm farm motor

1

1

5.0

-3%

Dc 5v 12v 24v 8 channels multifunction power conditioner/sequencer switch interlock latch self-locking momentary relay module

1

4

5.0

Dc 5v 12v 24v 8 channels multifunction power conditioner/sequencer switch interlock latch self-locking momentary relay module

2

7

4.5

-13%

Incomplete data

Lcus-1 usb serial port control relay module ch340 overcurrent protection electronic converter intelligent control usb switch

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0

-0.5%

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

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0

Dc 12v r223c16 16 channel relay board rs232 db9 female interface serial port module for arduino

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0

-2%

Dc 5v/12v/24v multifunction relay plc cycle delay time timer switch self-lock module plc home automation delay module board

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0

-1%

3pcs dr25e01 dc 5-24v 3a self-locking bistable dpdt relay controller board double switch module

1

1

5.0

Dc 5v 12v 24v 2 channel multi function relay module time delay relay self lock cycle timing relay module timer control switch

0

0

-5%

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

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0

Dc 5v 8 channel bluetooth relay control board remote control switch wireless smart voltage relay module compatible for android

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0