# 8-channel relay module, with optocoupler, low level, 5V

> 8-channel relay module with optocoupler, 5VDC power and logic supply, Low Level, Active Low triggering on IN1-IN8 pins. NC, NO and COM contacts on screw terminals, rated up to 250VAC and 10A. Dimensions 138 x 56 x 18.5mm, 4 mounting holes with 3.1mm diameter. Reference 77006.

- Page: https://sigmanortec.ro/en/8-channel-relay-module-with-optocoupler-low-level-5v
- Price: 33.64 RON
- Availability: In stock; 1-2 zile
- Reference: 77006 · EAN: 5947509386943
- Category: Electronic components > Relays
- Specifications: Output Type Voltage: Closed-Open Contact; Input Voltage: 5VDC; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.104 kg
- Updated: 2026-10-20
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:21 (Europe/Bucharest)

## Description

Module with 8 relays and optocouplers for safe control of AC or DC loads from Arduino, ESP or PLC, low level active low actuation on IN1-IN8, 5V power supply and logic, NC NO COM contacts on screw terminals for quick wiring, supports up to 250VAC and 10A, easy mounting on housing or panel.
Module with 8 relays with optocoupler. The module has power and signal pins grouped on the board and next to the relay socket are the related screw terminals (NC, NO and COM). These relays allow the control of consumers up to 250VAC and 10A.
Specifications:
Supply voltage: 12VDC
Logic voltage: 12VDC
Actuation: Low Level, Active Low on pins IN1-IN8
Number of relays: 8
Total dimensions mm: 138 x 56 x 18.5mm
Mounting holes: 4 with a diameter of 3.1mm
Use:
The board works at a logical voltage of 12VDC, therefore it requires the removal of the VCC and JD-VCC jumper, and the 12VDC power supply will be made through the GND and JD-VCC pins (from the Jumper location).
In the diagram below, next to the jumper, the voltage is 12VDC, not 5V.