--- product_id: 46320223 title: "KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B" brand: "keyestudio" price: "€ 16.74" currency: EUR in_stock: true url: https://www.desertcart.pt/products/46320223-keyestudio-5v-dcac-4-channel-relay-hat-shield-module-expansion store_origin: PT region: Portugal --- # Supports up to 250V AC / 24V DC @ 10A 4-channel relay control Opto-isolated for safe high-voltage use KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B **Brand:** keyestudio **Price:** € 16.74 **Availability:** ✅ In Stock ## Summary > ⚡ Power your smart home projects with precision and safety! ## Quick Answers - **What is this?** KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B by keyestudio - **How much does it cost?** € 16.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/46320223-keyestudio-5v-dcac-4-channel-relay-hat-shield-module-expansion) ## Best For - keyestudio enthusiasts ## Why This Product - Trusted keyestudio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready-to-Deploy Kit:** Includes installation package, source code, and quick start guide for fast setup. - • **Quad-Relay Powerhouse:** Control 4 high-power devices simultaneously with ease. - • **Instant Status Feedback:** Built-in LED indicators keep you informed of relay states in real-time. - • **High Voltage, High Safety:** Handles up to 250V AC or 24V DC at 10A with opto-isolation to protect your Pi. - • **Plug & Play Raspberry Pi Compatibility:** Seamlessly integrates with Raspberry Pi 4/A+/B+/Pi 2 & 3 models. ## Overview The KEYESTUDIO 5V DCAC 4-Channel Relay Hat is a compact expansion board designed for Raspberry Pi models 4, A+, B+, 2, and 3. It features four opto-isolated relays capable of switching up to 250V AC or 24V DC at 10A, enabling control of high-power devices like lights and motors. The module includes LED status indicators, comprehensive installation resources, and meets FCC and CE certifications, making it a reliable choice for smart home automation and industrial control projects. ## Description Introduction Keyestudio RPI 4-Relay Shield works with Raspberry Pi A+/B+/Pi 2 Model B/Pi 3 Model B. This shield provides 4-channel output. The relays are isolated in the PCB. All the channels can control up to 24V DC or 250V AC on 10 A. It allows you to control high power components like lights and motors via Raspberry Pi 3. Just plug it directly into your pi with 5V. You will find an LED indicated the status of the relays that an indicator to check working state easily. It can be applied to high voltage fields like home automation. With opto-asolator to avoid disturb of high voltage. We will provide installation package, source code and quick start guide PDF on keyestudio wiki page. http://wiki.keyestudio.com/index.php/KS0212_keyestudio_RPI_4-channel_Relay_Shield Specification Control Signal: TTL Level Rated Load： 10A 250VAC 10A 125VAC 10A 30VDC 10A 28VDC Rated Current: 10A(NO) 5A(NC) Max Switching Voltage: 250VAC 30VDC Contact Time: under 10ms Application: Smart home control PLC control Shipping list: 4-channel 5V Relay*1pcs M2.5 nut *4pcs M2.5*10 copper pillar*4pcs M2.5*20MM round head screw*4pcs ## Features - This shield uses 4-channel relay, providing 4-way input and output. And works with Raspberry Pi A+/B+/Pi 2 Model B/Pi 3 Model B - All the channels can control up to 24V DC or 250V AC on 10 A - Provides installation package, source code and quick start guide PDF - With functional testing, voltage and current testing, all our boards are fully qualified before selling - Adopting environmental-friendly raw materials, passed the United States FCC certification and the EU CE certification ## Technical Specifications | Specification | Value | |---------------|-------| | Standing screen display size | 0.1 Centimeters | | RAM | LPDDR2, LPDDR3 | | Wireless Type | Infrared | | Brand | KEYESTUDIO | | Series | KS0212 | | Operating System | Linux | | Item Weight | 3.52 ounces | | Product Dimensions | 2.56 x 0.98 x 0.98 inches | | Item Dimensions LxWxH | 2.56 x 0.98 x 0.98 inches | | Color | option 1 | | Processor Brand | Broadcom | | Number of Processors | 1 | | Manufacturer | keyes | | ASIN | B072XGF4Z3 | | Is Discontinued By Manufacturer | No | | Date First Available | June 20, 2017 | ## Product Details - **Brand:** KEYESTUDIO - **Model Name:** KS0212 - **Connectivity Technology:** Ethernet, HDMI, USB - **Operating System:** Linux - **CPU Manufacturer:** Broadcom ## Images ![KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B - Image 1](https://m.media-amazon.com/images/I/61J6t0B5ozL.jpg) ## Frequently Bought Together - KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B - Raspberry Pi 4 Model B 2019 Quad Core 64 Bit WiFi Bluetooth (4GB) - waveshare Power Over Ethernet (PoE) HAT for Raspberry Pi 4B/3B+, 802.3af/at PoE Network Standard, 5V USB-A&12V Header Outputs, PoE HAT Onboard Cooling Fan and MP8676 Buck Chip, Isolated --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/46320223-keyestudio-5v-dcac-4-channel-relay-hat-shield-module-expansion](https://www.desertcart.pt/products/46320223-keyestudio-5v-dcac-4-channel-relay-hat-shield-module-expansion) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-12*