Product Name:
mini DC 12V RS485 Relay Module Modbus Rtu Switch Board for CCTV Camera PTZ LED Security PLC
Package inlcuded:
1 x DC 12V 1Ch RS485 Modbus & AT command Relay Board
Description:
1: DC 12V power supply
2: Standby current (all relays closed) 7-8MA, 1 relay open 40MA
3: ''open'' ''close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands
4: Two instruction-control mode : AT command and MODBUS command
5: Under the AT command ,the maximum delay is 9999 seconds
Under the MODBUS command ,the maximum delay is 255 seconds
6 AT commands can be made serial HyperTerminal (serial assistant) Enter;
MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter;
7 Under the MODBUS command mode, it can support up to 247 devices in parallel
8 Size: 40 * 30 * 18mm ;
9 Weight: 17.5 g;
10 Maximum load: 20A 14VDC;20A/125VAC;10A/250VAC
Instruction manual Please ask us after the purchase
Application
Automated industry PLC
Smart Home,Home Automation ,Wiser Home;
Identification system;
Motor FW & BW
CCTV Camera PTZ Control
Security system
LED dot matrix screen
Typical applications:
1 AT command mode (M0 Connect), in this mode can be through the serial HyperTerminal (serial assistant) enter a simple AT command control relay. AT command mode time up to 9999 seconds
2 MODBUS command mode (M0 disconnect), 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 DC 12V control circuit,Wiring diagram below. ''LOAD'' may be camera,LED lights, fans, motors and other DC 12V equipment
2 DC 12V motor reversing control, Wiring diagram below. ''LOAD'' can be Fans, motors, pumps and other DC 12V equipment
Test Software(We offer a demo video):
Serial HyperTerminal:
Modbus Poll
