4Pcs 5V One Channel Relay Module Relay with Optocoupler Isolation Support High Low Level Trigger

4Pcs 5V One Channel Relay Module Relay with Optocoupler Isolation Support High Low Level Trigger Description

Module description:
1.The module Operating voltage 5V;
2.Fault-tolerant design, even if the control is broken, the relay will not operate;
3.The power indicator (green), the relay status indicator (red);
4.Module size: 50mm x 26mm x 18.5mm (L x W x H).

Interface:
Input
VCC: Relay power supply +
GND: Relay power supply -
IN: Signal trigger input (High or Low Level Signal, select via jumper)
Output
NO: Relay normally open.
COM: Relay Common Pin
NC: Relay normally closed.
High or Low Level Trigger Select:
1. Use High Level Trigger
When ' IN ' input High Level Signal, the ' NO ' connect with ' COM ' When ' IN ' input Low Level Signal, the ' NC ' connect with ' COM '
2. Use Low Level Trigger
When ' IN ' input Low Level Signal, the ' NO ' connect with ' COM ' When ' IN ' input High Level Signal, the ' NC ' connect with ' COM '
3. High or Low Level Trigger Select
Jumper connect with L, Low Level Trigger
Jumper connect with H, High Level Trigger
Color: As Shown
Material: plastic
Different production batches may have different labels, but this does not affect the use of the product.

Package Contents:
4 x relay module