Relay Output Terminals:

There are 12-pin interfaces, all of which can be directly wired out for user convenience.

1. NO1-NO4: Normally Open (NO) relay interfaces. These are suspended before the relay engages and are short-circuited to COM after engagement.
2. COM1-COM4: Common interfaces for the relays.
3. NC1-NC4: Normally Closed (NC) relay interfaces. These are short-circuited to COM before the relay engages and are suspended after engagement.

High/Low-Level Trigger Selection Terminals:

1. S1-S4: These are the high/low-level trigger selection terminals for relays 1 to 4, respectively.
2. When com is short-circuited with low, the corresponding relay is triggered by a low-level signal. When com is short-circuited with high, the relay is triggered by a high-level signal.

6-Channel Relay Module Product Introduction

Input Section:

1. DC+: Connect to the positive terminal of the power supply (voltage options include 5V, 12V, and 24V, according to relay requirements).
2. DC-: Connect to the negative terminal of the power supply.
3. IN1-IN6: Depending on the settings for each channel, these inputs can be configured for high or low-level control to engage the corresponding relay.

Relay Output Terminals:

1. 1Nl-1N6: Corresponding to the trigger control terminals for relays 1-6, supporting high or low-level triggering.
2. TRV+: External trigger power supply positive terminal. If a jumper wire is present between the external trigger power supply RTV+ and VCC, it should be removed.
3. TRV-: External trigger power supply negative terminal. If a jumper wire is present between the external trigger power supply RTV+ and GND, it should be removed.
4. 6 Microswitches: Corresponding to the test buttons for relays 1-6. These are active when triggered by a low-level signal.
5. High/Low-Level Trigger Selection: When COM is connected to L, low-level triggering is active. When COM is connected to H, high-level triggering is active.

Product Dimension Diagram:

6-Channel Relay Module Interface Description

Input Section:

1. 1NI-1N6: Corresponding to the trigger control terminals for relays 1-6, supporting high or low-level triggering.
2. TRV+: External trigger power supply positive terminal. If a jumper wire is present between the external trigger power supply RTV+ and VCC, it should be removed.

High/Low-Level Trigger Selection Terminals:

1. NO1-NO2: Normally Open (NO) relay interfaces. These are suspended before the relay engages and are short-circuited to COM after engagement.
2. COM1-COM2: Common interfaces for the relays.
3. NC1-NC2 (Note: The original “CN2” may be a typo and should be “NC2” for consistency): Normally Closed (NC) relay interfaces. These are short-circuited to COM before the relay engages and are suspended after engagement.

8-Channel Relay Module Product Introduction

1. Module uses relays with a maximum load of AC 250V/10A and DC 30V/10A for normally open contacts.
2. Uses SMD optocoupler isolation with strong driving capability, stable performance, and a triggering current of 5mA.
3. Module operating voltages include 5V, 12V, and 24V.
4. Each channel of the module can be set for high or low level triggering via jumper settings.
5. Fault-tolerant design ensures relay does not actuate even if the control line is energized.
6. Power indicator light (green) and 8 relay status indicator lights (red).
7. User-friendly interface design; all interfaces can be directly wired out through terminal blocks for convenience.
8. Module dimensions: 141.5mm50mm18.5mm (LWH).
9. Equipped with 4 fixing bolt holes, with hole diameter of 3.1mm and spacing of 136mm*44.5mm.(Manual measurement, may have slight errors!)

8-Channel Relay Module Interface Description

Input Section:

1. DC+: Connect to the positive terminal of the power supply (voltage options include 5V, 12V, and 24V, according to relay requirements).
2. DC-: Connect to the negative terminal of the power supply.
3. IN1-IN8: Depending on the settings for each channel, these inputs can control the corresponding relay engagement at either high or low levels.

Relay Output Terminals:

There are 24-pin interfaces, all of which can be directly wired out for user convenience.

1. NO1-NO8: Normally Open (NO) relay interfaces. These are suspended before the relay engages and are short-circuited to COM after engagement.
2. COM1-COM8: Common interfaces for the relays.
3. NC1-NC8: Normally Closed (NC) relay interfaces. These are short-circuited to COM before the relay engages and are suspended after engagement.

High/Low-Level Trigger Selection Terminals

1. S1-S8: These are the high/low-level trigger selection terminals for relays 1 to 8, respectively.
2. When com is short-circuited with low, the corresponding relay is triggered by a low-level signal. When com is short-circuited with the high terminal, the relay is triggered by a high-level signal.

When the relay is not engaged, the common terminal of the relay is connected to its normally closed terminal, and the load is not powered and does not work. When the relay engages, the common terminal of the relay is connected to its normally open terminal, and the load is powered and works.

Version                  Quiescent Current                    Triggering Current              Triggering Power Supply (Low)

5V                                5mA                                                   3-5mA                                            0-1.5V
12V                              5mA                                                   3-5mA                                             0-4V
24V                              5mA                                                   3-5mA                                             0-8V