Feature:
Our 4-Channel Relay Module offers versatile and reliable device and load control.

It includes four high-current relays with substantial switching capacity, making it suitable for industrial, PLC, home automation, and microcontroller applications.

The relay module is designed with easy-to-use blue KF301 terminals for secure wire connections.

Each relay features a visible LED indicator for activation. When a low-level signal is applied, the LED illuminates, indicating relay activation.

The 817c optocoupler isolates input and output signals, allowing current to flow through the relay coil, closing the normally open (NO) contact. High-level signals close the normally closed (NC) contact, effectively controlling the load.

Module parameters:
1.Power supply voltage: DC 5V
2.Current: more than 100mA
3.Load: 250V 10A AC or 30V 10A DC
4.High quality relays. A common end, a normally open end, and a normally closed end.
5.Optocoupler isolation, good anti-interference.
6.High Level or Low Level Trigger. The status indicator is on when it is engaged, and it is off when it is released.
7.VCC is the system power supply, JD_VCC is the relay power supply. Just plug in the jumper cap.
8.There are 4 fixing screw holes around the board, the hole diameter is 3.1mm, which is convenient for installation and fixing.
9.Size: 71.5mm(L)*52.7mm(W)*18.5(H)mm
10.Single weight: 56g

Wiring instructions:
VCC: positive pole of system power supply.
GND: Negative pole of system power supply.
IN1-IN4: Low-level signal inputs that activate the relays.
JD-VCC: Independent power input for relay coils, enabling separate power supply.
(Please do not reverse the connection to avoid burning out)

Package contain:
2PCS 4 channel relay module
10 pin male to female jumper wire