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1 The working voltage is DC 6.5-30V, the driving voltage is equal to the working voltage.
The load can be Relay/LED/Small fan/ small motor,The maximum drive current of each channel is 300MA

2 As PLC IO expansion board, control high power relay.
DC 12V 24V 32-Channels DIN35 C45 Rail Box RS485 Modbus RTU ULN2803A Darlington Transistor Controller PLC IO expansion Board
$92.80
Sale price
$92.80
Regular price
$0.00
Description
SPECIFICATIONS
Brand Name: eletechsup
Choice: yes
Condition: New
Dissipation Power: 12V
High-concerned chemical: none
Origin: Mainland China
Supply Voltage: 12V
Type: Relay
is_customized: Yes
For more information, please Download instruction manual link:
https://1drv.ms/u/s!AjrAGEbCBLls3jTY-3rBodlE8vGz?e=7d6IR1
Product Name: DC 12V 24V 32-Channels DIN35 C45 Rail Box RS485 Modbus RTU ULN2803A Darlington Transistor Controller PLC IO expansion Board
Package inlcuded:
1PCS DC 12V 24V 32Ch Din Rail RS485 Modbus RTU ULN2803A Darlington Transistor Controller Board

Description:
1: Working voltage: DC 6.5-30V (9V 12V 24V)
2: Standby current All channels are closed) 5MA,All channels open 57MA.
3: ''Open'' ''Close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands
4: MODBUS RTU command
5: Under the ''Delay'' command ,the maximum delay is 255 seconds
6 MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter;
7 Under the MODBUS command mode, it can support up to 64 devices in parallel
8 The default baud rate is 9600BPS. The baud rate can be modified by instructions: 1200 2400 4800 9600 19200BPS
9 Size: 100 * 72 * 20mm(Only PCB Board);120 * 88* 42mm(with Din Rail Box)
10 Weight: 65g(Only PCB Board);144g(with Din Rail Box)
11 Maximum load: The maximum drive current of each channel is 300MA
DIN rail Box parameters:
Product model: UM72
Color: green
Width: suitable for PCB board width UM72(72mm)
Insulation grade: flame-retardant VO grade
Backplane length: suitable for 100 mm PCB boards
Net weight: 72g
Installation: DIN35 and C45 rail
2: Standby current All channels are closed) 5MA,All channels open 57MA.
3: ''Open'' ''Close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands
4: MODBUS RTU command
5: Under the ''Delay'' command ,the maximum delay is 255 seconds
6 MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter;
7 Under the MODBUS command mode, it can support up to 64 devices in parallel
8 The default baud rate is 9600BPS. The baud rate can be modified by instructions: 1200 2400 4800 9600 19200BPS
9 Size: 100 * 72 * 20mm(Only PCB Board);120 * 88* 42mm(with Din Rail Box)
10 Weight: 65g(Only PCB Board);144g(with Din Rail Box)
11 Maximum load: The maximum drive current of each channel is 300MA
DIN rail Box parameters:
Product model: UM72
Color: green
Width: suitable for PCB board width UM72(72mm)
Insulation grade: flame-retardant VO grade
Backplane length: suitable for 100 mm PCB boards
Net weight: 72g
Installation: DIN35 and C45 rail

Application
Automated industry PLC
Smart Home,Home Automation ,Wiser Home;
PTC Camera
Security Monitoring
Identification system;
Line Drivers
IP Camera
LED Lamp Drivers
Automatic curtain control
Smart Home,Home Automation ,Wiser Home;
PTC Camera
Security Monitoring
Identification system;
Line Drivers
IP Camera
LED Lamp Drivers
Automatic curtain control
Typical applications:
MODBUS command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control
MODBUS command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control

Wiring Diagram:
1 The working voltage is DC 6.5-30V, the driving voltage is equal to the working voltage.
The load can be Relay/LED/Small fan/ small motor,The maximum drive current of each channel is 300MA

2 As PLC IO expansion board, control high power relay.

Test Software(We offer a demo video):
Serial HyperTerminal:

Modbus Poll

Free Shipping Over $199
- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
30-Day Return Policy
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
Why Choose Us?
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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