# 8-channel relay module, with optocoupler, low level, 12V

> 8-channel relay module with optocoupler for isolation, active low inputs (IN1-IN8) at 12VDC. Relays rated 10A/250VAC, screw terminals NC/NO/COM per channel, grouped power and signal pins. Dimensions 138 x 56 x 18.5mm, 4 mounting holes with 3.1mm diameter. Requires removing the VCC/JD-VCC jumper to supply 12VDC.

- Page: https://sigmanortec.ro/en/8-channel-relay-module-with-optocoupler-low-level-12v
- Price: 35.48 RON
- Availability: In stock; 1-2 zile
- Reference: 9239 · EAN: 5943989575952
- Category: Electronic components > Relays
- Specifications: Output Type Voltage: Closed-Open Contact; Input Voltage: 12 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.104 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 05:21 (Europe/Bucharest)

## Description

Quickly control up to 8 AC or DC loads from a microcontroller or PLC, with active low 12V inputs and optocoupler isolation. Offers 10A @ 250VAC relays, NC NO COM screw terminals for each channel and grouped power and signal pins for easy wiring. The board is compact, 138 x 56 x 18.5 mm, with 4 mounting holes.
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 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.