12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger

12V 4 Channel Relay Module With OPTO-Isolated Support High and Low
Level Trigger Description:
1. The module uses genuine quality relay, normally open interfaces
Maximum load: AC 250V/10A, DC 30V/10A;
2. Using SMD OPTOCOUPLER isolation, driving ability, stable performance; trigger current 5mA;
3. The module voltage is 12V;
4. Each way module can be set high or low triggered by jumper;
5. Fault-tolerant design, even if the control line is broken, the relay will not operate;
6. The power indicator ( green ), 4 relay status indicator ( red )
7. Interface design humane, all interfaces can be connected directly via terminal wiring leads, very convenient
8.
Module size: 73mm * 50mm * 18.5 mm ( L * W * H )
9. Has four mounting bolts holes, hole 3.1 mm, 67mm * 44.5 mm pitch
Interface: 1.
DC +: positive power supply ( voltage required by the relay, there 5V. 9V. 12V and 24V choice ) 2.
DC-: negative power connection 3.
IN1-IN4: each way based on the settings, can be high or low to control the corresponding relay outputs: a 12- line interface, the interface can be directly connected to all leads, user-friendly 1.
NO1 - NO4: normally open relay interfaces, relay before the vacant after the pull shorted with COM 2. COM1 - COM4 Common Interface Relays 3.
NC1 - NC4: normally closed relay interface relay shorted with COM ago, after the pull- vacant
High and low trigger selection: 1. S1-S4 in order to relay a way -4 road high and low trigger selection; 2. Com with low short circuit, triggering the corresponding relay is low, while the high end of the short com high trigger