BestDealPlus
  1. Home
  2. Security & Protection
  3. Building Automation
32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32
32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32
32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32
32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32
32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32
32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32

32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32

(5.0)
US $ 84.24    32% off
US $ 57.28
In Stock
FREE SHIPPING WORLDWIDE
 View More  Shop Now

Cheap And Discounts 32Ch Modbus RTU RS485 Relay Switch Board UART Serial Port Module DIN Rail Box PLC Expanding Board, R421C32 Wholesale. Buy Directly From Merchant Shop1102471283 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.

Recommends

HOT
Smart WiFi Garage Door Opener Controller, APP Remote Control from Anywhere, No Hub Needed, History Record/Set Timer/Schedule
US $ 13.75
US $ 26.96
-49%
(5.0)
Smallest Elfin-EW10A-0 Wireless Networking Devices Modbus TPC IP Function RJ45 RS232 to WIFI Serial Server
US $ 6.20
US $ 6.74
-8%
(5.0)
HOT
ENS160+AHT21 Carbon Dioxide CO2 eCO2 TVOC Air Quality & Temperature & Humidity Sensor Module
US $ 2.07
US $ 7.95
-74%
(5.0)
plc wifi Home HF9624 4G LTE PLC Remote Control Element Supports Mitsubishi, Siemens, Omron, Schneider, Panasonic...
US $ 105.62
US $ 114.80
-8%
(5.0)
HOT
Original IFM Pressure Sensor PI2898 With Display
US $ 1,261.51
(5.0)
HOT
Taidacent 1CH 12V Bluetooth-compatible Relay Switch Module BLE Switch Controller Android IOS Mobile Phone APP Control
US $ 10.78
(5.0)
HOT
HLK-LD2410B High Sensitivity 24G Radar Heartbeat Detection Sensor Module LD2410B HLK-LD2410B-P 24Ghz HLK-LD2410B
US $ 5.27
(5.0)
Industrial Class Wall-mounted RS-485/422 Photoelectric Isolation Data Repeater ATC-109N Relay Signal Enhancement Receiver
US $ 48.60
US $ 53.41
-9%
(5.0)
HOT
Tuya 3 in 1 Function PIR+ Light Sensor + Scene Switch WiFi Zigbee Human Infrared Motion Detector High Precision Ultra Low Power
US $ 17.41
US $ 34.82
-50%
(5.0)
HOT
Tuya Zigbee 3.0 Temperature Humidity Sensor APP Remote Control Thermometer via Smart Life For Smart Home Work With Yandex Alexa
US $ 4.86
US $ 7.84
-38%
(4.7)
HOT
MIUCDA Tuya WiFi ZigBee Smart Dimmer Switch Module 1/2 Gang Dimmer Light Switch Voice/APP Control Work With Alexa Google Home
US $ 7.24
US $ 7.95
-9%
(5.0)
HOT
MOES Tuya Smart Home Control Panel Max 10.1inch Touch Screen with Bluetooth Zigbee Gateway Built-in Building Intercom Compatible
US $ 363.70
US $ 542.84
-33%
(5.0)
HOT
Solar Sensor LED Human Body Induction Light Household Outdoor Wiring Free Waterproof Garden Decoration Courtyard Light
US $ 21.33
US $ 46.38
-54%
(5.0)
HOT
HLK-LD1030 10G Intelligent Human Microwave Induction Radar Module 10.525GHZ Low Power X-band Micro-motion Sensing Switch Sensor
US $ 0.64
(5.0)
1PCS New Thin Cylinder Sealing Ring NADUOP 40-1 Pump Truck Transfer Case Cylinder Overall Piston 40 * 10 * 8.51
US $ 38.06
US $ 63.43
-40%
(5.0)
HOT
Tuya Wifi Zigbee Human Presence Detector Smart Human Body PIR Sensor 24G Radar Detector Motion Sensors Support Smart life
US $ 7.38
(5.0)
HOT
Tuya Wireless Light Temperature and Humidity Sensor ZigBee Bluetooth App Remote Detection with Display Screen Remotely Monitor
US $ 31.68
US $ 68.88
-54%
(5.0)
Frequency Conversion Magnetron 2M219J 519J 2M226 WITOL For Midea Microwave Oven Control Valve
US $ 29.91
US $ 49.85
-40%
(5.0)
HOT
4-20mA output vibration transmitter piezoelectric ceramic sensor range 100mm/s for vibration monitoring price
US $ 261.25
(5.0)
HOT
Tuya WIFI Wireless Intelligent Water Floor Heating Wall Mounted Furnace Temperature Controller APP Voice Control Programming
US $ 45.96
US $ 99.92
-54%
(5.0)
1PC New 1622369480 1623181080 Blow-Off Valve Fits Atlas Copco Air Compressor
US $ 23.94
US $ 39.89
-40%
(5.0)
HOT
IMOU WiFi Smart Zigebee 3.0 Temperature and Humidity Sensor LCD Screen History Record Smart Home Security Remote Control
US $ 15.16
US $ 32.96
-54%
(3.0)
EE11A MINI RS485 Serial Server to Ethernet ModbusTCP to Ethernet RJ45 Converter With Eembedded Web Server
US $ 11.30
US $ 12.02
-6%
(5.0)
HOT
NOYAFA JMS11 Multifunctional Air Quality HCHO CO2 Tester LED Digital Display Humidity Temperature Monitor Light Alarm Smart Home
US $ 14.19
US $ 20.27
-30%
(5.0)
HOT
Graffiti Smart WiFi Thermometer High and Low Temperature Alarm Wireless Home Humidity Sensor Battery USB Power Supply
US $ 25.23
US $ 54.84
-54%
(5.0)
Bliiot iot IO Module 1 RS485 4 Digital output Input modbus RTU TCP for PLC DCS HMI scada Instrumentation Data M110E
US $ 110.56
(5.0)
HOT
MOES Tuya US WiFi Solar Powered Water Timer Meter IP65 Waterproof Brass Inlet With Soil Temperature Humidity Sensor Detector
US $ 43.36
US $ 65.70
-34%
(5.0)
HOT
Tuya Wifi 130dB Smart SOS Sound and Light Alarm One-Button Call for Emergency Help App Remote Control Home Alarm Security System
US $ 5.42
(5.0)
HOT
Meian Tuya Zigbee Gateway Multi-Mode Zigbee 3.0 Hub Wifi Bluetooth Gateway Linkage with Water Leak Sensor Door Sensor Smart Home
US $ 6.65
US $ 7.15
-6%
(5.0)
HOT
MIUCDA Tuya WiFi/Zigbee Smart Dimmer Switch Touch Light Switch US 1/2 Gang Glass Panel APP Remote Control For Alexa Google Home
US $ 15.96
US $ 17.55
-9%
(5.0)
304 Filling Machine Discharge Nozzle Paste Liquid Filling Head Filling Machine Accessories Anti-drip Filling head
US $ 63.55
US $ 105.92
-40%
(5.0)
Cable For Elfin-ee10 Ee11ew10 Ew11*eg10 Eg11( Cable Only, Without The Elfin Device)
US $ 2.74
US $ 2.85
-4%
(5.0)
22334155 Pneumatic Cylinder Fit for Ingersoll Rand Air Compressor Servo Cylinder Control Valve
US $ 51.39
US $ 85.65
-40%
(5.0)
BLiiot Industrial Automation Protocol Conversion Air Conditioning Gateway Ethernet 4G SIM wifi modbus TCP RTU to Modbus RTU TCP
US $ 54.66
(5.0)
HOT
1Pc 1/8" 1/4" 3/8" 1/2" 3/4" Brass Hex Nipple Pipe Fittings Female x Male Thread Connect Repair Joints Reducer Hexagonal Bushing
US $ 0.97
US $ 1.14
-16%
(5.0)
HOT
Outdoor IP66 Waterproof Security Camera HD Night Vision Home Wireless Remote Monitor Al Human Detection 2-Way Audio Cameras
US $ 43.34
US $ 86.68
-50%
(5.0)
1PCS NEW 22064695 FOR Ingersoll Rand Minimum Pressure Valve Maintenance Kit
US $ 36.68
US $ 61.13
-40%
(5.0)
HOT
16A Mini Smart Wifi DIY Switch Supports 2 Way Control, Smart Home Universal Module, Works with Alexa Google Home Smart Life App
US $ 7.44
US $ 11.62
-36%
(5.0)
HOT
Tenky Tuya Zigbee Presence Sensor Human Body Sensor Body Movement Mini PIR Motion Sensor Smart Home Automation Residential
US $ 6.80
(5.0)
HOT
AC85-265V Intelligent Human Infrared Sensor Switch Ceiling Sensor Switch for Ceiling 360℃ Motion Sensor Light Switch
US $ 2.75
US $ 5.99
-54%
(4.7)
1PCS New FIT For Ingersoll Rand 35322379 Automatic Air Release Valve
US $ 49.80
US $ 82.99
-40%
(5.0)
1PCS New Replace 3000249 DC24V 3000489 DC12V 3002594 230V Solenoid Valve Coil
US $ 50.34
US $ 83.91
-40%
(5.0)
Tuya Smart WIFI Ball Valve Water Valve DN15 DN20 DN25 Timing Countdown Garden irrigation Remote Control Alexa Google Assistant
US $ 71.95
US $ 75.95
-5%
(5.0)
HOT
Tuya 6 Gang ZigBee Wireless Smart Scene Switch Push Button Controller APP Control Keyboard Scene Sticker Panel Smart life
US $ 7.85
(4.7)
HOT
ZIGBEE/Wl-FI Human Breathing Presence Sensor Tuya Smart Static Unmanned Active Fretting Body Motion Detection Alam Push Radar
US $ 27.03
US $ 58.76
-54%
(5.0)
HOT
360° Rotatable Tuya WiFi Zigbee Smart Motion Detection Sensor Security Alarm Human Presence Sensor Alexa Google Home
US $ 5.35
(4.9)
HOT
ZigBee Smart Human Body Presence Sensor Wifi Tuya Smart Movement Micro Motion Detection Remote Alarm Monitor Infrared Radar
US $ 39.96
US $ 86.86
-54%
(5.0)
HOT
2 Pcs Black/White PV Pneumatic Joint Right Angled 90 Degree Plastic Elbow PV 04 06 08 10 12 16mm Gas Pipe Quick Connector
US $ 0.63
US $ 0.75
-16%
(5.0)