Description: Producta Name: 4 PCS mini DC 12V RS485 Relay Module Modbus Rtu Switch Board for CCTV Camera PTZ LED Security PLC Package inlcuded: 4 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
Price: 30.4 USD
Location: guangzhoushi
End Time: 2025-01-28T03:47:01.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: eletechsup
Type: RS485
MPN: Does Not Apply
Bundle Description: R428A01
