---
title: "NORVI-EX-R8 – DATASHEET"
description: "## **Product Features** ![](https://norvi.io/wp-content/uploads/2024/09/NORVI-EX-R8_Summary-Image-1024x856-1.jpg) - Normally, Open Relay Outputs - Loads up to 5 A 30 VDC/250 VAC resistive - MCP23008 Port Expander - Address Configurable Over DIP Switch **Expansions Supported** - Relay Outputs ## **Main** | Range of Product…"
url: "https://norvi.io/docs/norvi-ex-r8-datasheet/"
updated: "2026-04-07"
category: "OTHER PRODUCTS / NORVI RELAY OUTPUT EXPANSION / NORVI EX-R8"
---

# NORVI-EX-R8 – DATASHEET

## **Product Features**

![](https://norvi.io/wp-content/uploads/2024/09/NORVI-EX-R8_Summary-Image-1024x856-1.jpg)

- Normally, Open Relay Outputs
- Loads up to 5 A 30 VDC/250 VAC resistive
- MCP23008 Port Expander
- Address Configurable Over DIP Switch

**Expansions Supported**

- Relay Outputs

## **Main**

| Range of Product | NORVI Expansion |
| --- | --- |
| Product Type | Expansion Module |
| Certifications | EN 61131-2:2007 EN 61010-1:2010+A1:2019 EN IEC 61010-2-201:2018 2014/30/EU- Electromagnetic Compatibility (EMC) Annex III, Part B, Module C  |
| Rated supply voltage | 24V DC |
| Communication | I2C |
| Inputs and Outputs | 8 x Relay Outputs |
| Displays and Visual Indicators | 1 LED green |

## **Complementary**

| Product Unified Code | NORVI EX-R8 |
| --- | --- |
| Product Part Numbers  | NORVI EX-R8 |

## **Mechanical Properties**

| Enclosure | NORVI 202 |
| --- | --- |
| Mounting / Installation Method | DIN RAIL / MOUNTING TABS |
| Terminal Type | Top hat type TH35-15 rail conforming to IEC 60715 Top hat type TH35-7.5 rail conforming to IEC 60715 Plate or panel with fixing kit |
| Terminal Arrangement | Top and Bottom |
| Length | 59.00 mm |
| Height | 86.00 mm |
| Width | 35.00 mm |

![](https://norvi.io/wp-content/uploads/2024/09/measurment-1024x928-8.jpg)

## **Environment**

| IP degree of protection  | IP20 |
| --- | --- |
| Operating altitude  | 0 - 2000 meters |
| Operating Temperature  | - –10 … +85° C (14...185 °F) |
| Storage altitude  | 0 - 3000 meters |
| Shock resistance  | 15 gn for 11ms |
| Resistance to electrostatic discharge  | 4kV on contact   8kV on air |
| Resistance to electromagnetic fields  | 10 V/m (80 MHz ...... 1GHz)    3 V/m (1.4 MHz ...... 2 GHz)    1 V/m (2 MHz ...... 3 GHz) |

## **Electrical Characteristics**

### *Grid Powered Devices*

| Rated Supply Voltage (V) |   24V DC  |
| --- | --- |
| Current Consumption (mA) |   400mA |
| Recommended Power Source |   1A 24V DC |

## **Processing**

| SOC / MCU | 16-bit-I/O Expander with Serial Interface |
| --- | --- |
| Module  | MCP23017T-E_SO |
| Operating supply voltage | 2.4V to 3.6V |
| Resolution | 16bit |
| I2C SDA | GPIO16 |
| I2C SCL | GPIO17 |

## **INPUTS and OUTPUTS**

### **Relay Outputs**

| Number of Relay Outputs |   8 |
| --- | --- |
| Relay Output Type |   Normally Open / SPST / Electro-mechanical |
| Contact Current Rating (Resistive) |   5 A 30V DC/250V AC |
| Maximum Contact Voltage |   270V AC, 125V DC |
| Maximum Switching Frequency |   60 Hz |
| Terminal Arrangement | Relay Output 0 - GPA0   Relay Output 1 - GPA1   Relay Output 2 - GPA2   Relay Output 3 - GPA3    Relay Output 4 - GPB7   Relay Output 5 - GPB6   Relay Output 6 - GPB5   Relay Output 7 - GPB4   |

![](https://norvi.io/wp-content/uploads/2024/09/EX-R8-917x1024-1.jpg)

## **Expansion Port**

![](https://norvi.io/wp-content/uploads/2024/09/unnamed-20-1024x377.jpg)

| **PIN** | **ESP32 Connection** |
| --- | --- |
| 1 | TXD0 |
| 2 | GPIO25 |
| 3 | RXD0 |
| 4 | AUX1 |
| 5 | GPIO15 |
| 6 | NRST |
| 7 | SCL2 |
| 8 | AUX2 |
| 9 | SDA2 |
| 10 | GND |