--- product_id: 806552733 title: "Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection" brand: "spacnana" price: "¥2967" currency: JPY in_stock: true category: "Spacnana" url: https://www.desertcart.jp/products/806552733-opto-isolator-module-1-channel-optocoupler-isolation-board-with-ttl store_origin: JP region: Japan --- # 220V AC detection precision LED power status indicator Seamless PLC integration Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection **Brand:** spacnana **Price:** ¥2967 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your automation game with precision and confidence! ## Quick Answers - **What is this?** Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection by spacnana - **How much does it cost?** ¥2967 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/806552733-opto-isolator-module-1-channel-optocoupler-isolation-board-with-ttl) ## Best For - spacnana enthusiasts ## Why This Product - Trusted spacnana brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Visual Power Confirmation:** Built-in LED instantly signals power presence, eliminating guesswork and boosting safety. - • **Robust Dual-Terminal Design:** Secure 2P and 3P terminal connectors ensure reliable, hassle-free wiring in any setup. - • **Plug & Play PLC Compatibility:** Effortlessly syncs with your PLC system for instant automation upgrades. - • **Accurate 220V AC Voltage Sensing:** Detects high voltage with rock-solid stability to keep your projects safe and smart. - • **TTL Level Output for Microcontrollers:** Directly interfaces with microcontrollers, streamlining your IoT and embedded designs. ## Overview The Opto Isolator Module is a single-channel optocoupler board designed for precise detection of 220V AC power. Featuring TTL level output compatible with microcontrollers and PLCs, it offers stable NPN output signals and a built-in LED indicator for real-time power status. Its dual-terminal connectors provide secure and flexible wiring options, making it an essential component for professional automation and industrial control applications. ## Description Spec: Item Type: Opto Isolator Module Material: PCB Function: Can be used to detect the existence of 220V AC Function: Detect whether there is 220V AC power, stable output high and low level (NPN output) When there is 220V input, the LED is on, the optocoupler is turned on and the output is low When there is no 220V input, the LED does not light up, and the optocoupler does not work. The output is pulled high by the resistor Package List: 1 x Opto Isolator Module Note: When the module is used, should be placed in a dry and ventilated environment with good insulation protection. ## Features - [Easy Plc Integration] This module seamlessly integrates with plc systems. simply connect the com terminal of the plc to the 24v input terminal of the power supply, link the signal output out of the board, and attach the gnd on the optocoupler board to the negative pole of the power supply. this ensures communication between the module and your plc system. - [Versatile Voltage Detection] The opto isolator module is designed to detect 220v ac power with accuracy and stability. it features a ttl level output that can be easily read by microcontrollers, making it ideal for various electronic applications. the module supports a power supply range of 3-5v and can also be connected to plc 24v levels, providing flexibility for different setups. - [Reliable Power Indication] The built-in led offers clear visual feedback on the power status. when 220v input is detected, the led illuminates, indicating active power. this feature ensures quick and easy monitoring of the power supply status, enhancing safety and convenience in your projects. - [Stable Output Performance] With npn output, this module provides stable high and low levels when detecting 220v ac power. when 220v input is present, the led lights up, the optocoupler activates, and the output goes low. when no input is detected, the led remains off, the optocoupler stays inactive, and the output is pulled high by the resistor. - [Dual Terminal Connectivity] The module features a green 2p 5.0 terminal for 220v voltage connection and a 3p terminal for microcontroller input. this dual-terminal design allows for easy and secure connections, ensuring reliable performance in various electrical setups. ## Images ![Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection - Image 1](https://m.media-amazon.com/images/I/617cZLeuJ6L.jpg) ![Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection - Image 2](https://m.media-amazon.com/images/I/71BnV31odrL.jpg) ![Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection - Image 3](https://m.media-amazon.com/images/I/71lY6ghzfBL.jpg) ![Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection - Image 4](https://m.media-amazon.com/images/I/7123wdxf+HL.jpg) ![Opto Isolator Module, 1 Channel Optocoupler Isolation Board with TTL Level Output, for PLC AC 220V Detection - Image 5](https://m.media-amazon.com/images/I/61p8jNVdPYL.jpg) --- ## 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.jp/products/806552733-opto-isolator-module-1-channel-optocoupler-isolation-board-with-ttl](https://www.desertcart.jp/products/806552733-opto-isolator-module-1-channel-optocoupler-isolation-board-with-ttl) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-11*