🖥️ Raspberry Pi 3 Model B — 2GB RAM | Home Assistant & Smart Home Server

The trusted single-board computer for Home Assistant, Zigbee2MQTT, Node-RED, Pi-hole, and countless smart home and DIY projects. The Raspberry Pi 3 Model B features a 1.2 GHz 64-bit quad-core ARM Cortex-A53, 2GB LPDDR2 RAM, built-in WiFi and Bluetooth, Ethernet, 4× USB 2.0, HDMI, and the 40-pin GPIO header. Pair with a ZBDongle-E or Dongle-LMG21 to run a full local Zigbee smart home — no cloud required.

Choose your Raspberry Pi:

Raspberry Pi 3B · 2GB Raspberry Pi 4B · 2GB

🚚

Free Delivery

Orders over R2,500

🇿🇦

Local Stock

Ships from Gauteng

🖥️

Quad-Core

1.2 GHz ARM

📶

WiFi + BT

Built-In

⚡ Key Features

1.2 GHz Quad-Core ARM Cortex-A53 — 64-bit Broadcom BCM2837 SoC; enough for Home Assistant, Zigbee2MQTT, and lightweight automation servers
2GB LPDDR2 RAM — runs Home Assistant OS, Raspberry Pi OS, or other Linux distributions
Built-In WiFi & Bluetooth — 802.11n wireless and Bluetooth 4.1/BLE; no adapters needed
Ethernet (100 Mbps) — wired network connection for reliable server use
4× USB 2.0 Ports — connect Zigbee dongles, storage, keyboard, and peripherals
HDMI Output — connect a monitor for setup or use headless via SSH
40-Pin GPIO Header — interface with sensors, relays, displays, and custom electronics
MicroSD Card Slot — boot from MicroSD (card not included); use 32GB+ for Home Assistant
Micro USB Power — 5V / 2.5A power supply recommended (not included)

🏠 Perfect For

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Home Assistant Server

Install Home Assistant OS on a MicroSD card and run a full local smart home server. Add a ZBDongle-E for Zigbee device control. Manage all your SONOFF, Zigbee, WiFi, and Matter devices from one dashboard.

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Zigbee2MQTT / ZHA

Plug in a SONOFF ZBDongle-E or Dongle-LMG21. Run Zigbee2MQTT or ZHA for full local Zigbee control — no cloud, no eWeLink dependency, complete privacy.

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Pi-hole Ad Blocker

Block ads and trackers across your entire home network. The Pi 3B handles DNS-level ad blocking for dozens of devices with ease.

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DIY & Maker Projects

GPIO header connects to sensors, relays, cameras, displays, and more. Perfect for custom automation, weather stations, security systems, and learning to code.

💡 Pi 3B vs Pi 4B: The Pi 3B is sufficient for basic Home Assistant setups with up to ~30 devices. For larger installations (50+ devices, multiple add-ons, cameras, dashboards), the Pi 4B is recommended — it has a faster 1.5 GHz CPU, USB 3.0, Gigabit Ethernet, and USB-C power.

📋 Technical Specifications

Product	Raspberry Pi 3 Model B
SoC	Broadcom BCM2837 (64-bit)
CPU	1.2 GHz Quad-Core ARM Cortex-A53
RAM	2GB LPDDR2
WiFi	802.11n (2.4 GHz)
Bluetooth	Bluetooth 4.1 / BLE
Ethernet	100 Mbps
USB	4× USB 2.0
Video	Full-size HDMI
GPIO	40-pin header
Storage	MicroSD card slot (card not included)
Power	Micro USB · 5V / 2.5A recommended
Dimensions	85.6 × 56.5 × 17 mm
In the Box	1× Raspberry Pi 3 Model B board

⚠️ Board only. MicroSD card, power supply, case, and cables are not included. You will need a MicroSD card (32GB+ recommended), a 5V/2.5A Micro USB power supply, and optionally a case and heatsinks.

❓ Frequently Asked Questions

Can I run Home Assistant on this?

Yes. The Pi 3B runs Home Assistant OS. Flash the image to a MicroSD card (32GB+), insert it, power on, and access the dashboard via your browser. Add a SONOFF ZBDongle-E for Zigbee support.

What do I need besides the board?

At minimum: a MicroSD card (32GB+), a 5V/2.5A Micro USB power supply, and a network connection (WiFi or Ethernet). A case and heatsinks are recommended but optional.

Is the Pi 3B still fast enough?

For basic Home Assistant with up to ~30 devices and a few add-ons, the Pi 3B works fine. If you plan a large setup (50+ devices, multiple dashboards, cameras, Grafana), upgrade to the Pi 4B.