--- product_id: 525176049 title: "1.5V LED Flashing Circuit Board, Blinking LED, 10 Months Flashing on Single AA Battery (not Included), Fake Alarm Light" brand: "blue charm beacons" price: "€ 25.62" currency: EUR in_stock: true category: "Blue Charm Beacons" url: https://www.desertcart.pt/products/525176049-1-5v-led-flashing-circuit-board-blinking-led-10-months store_origin: PT region: Portugal --- # 1.5V astable multivibrator tech 10 months on 1 AA battery 1 flash per second red LED 1.5V LED Flashing Circuit Board, Blinking LED, 10 Months Flashing on Single AA Battery (not Included), Fake Alarm Light **Brand:** blue charm beacons **Price:** € 25.62 **Availability:** ✅ In Stock ## Summary > 🔴 Blink Boldly, Power Smartly: The 10-Month Flash That Won't Quit! ## Quick Answers - **What is this?** 1.5V LED Flashing Circuit Board, Blinking LED, 10 Months Flashing on Single AA Battery (not Included), Fake Alarm Light by blue charm beacons - **How much does it cost?** € 25.62 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/525176049-1-5v-led-flashing-circuit-board-blinking-led-10-months) ## Best For - blue charm beacons enthusiasts ## Why This Product - Trusted blue charm beacons brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Versatile:** Slim 14x45mm board fits anywhere—engineer your own unique flashing light solution. - • **Ultra-Low Power Marvel:** Keeps blinking for 10 months on a single AA battery—no constant recharging needed. - • **Instant Attention Grabber:** Flashes at a steady 1Hz rate, ideal for fake alarms, signage, or hobby projects that demand visibility. - • **Customizable LED Placement:** LED bulb friction-fits or solder-in for flexible DIY setups—perfect for creative pros. - • **Next-Level Voltage Efficiency:** Defies norms by flashing a red LED at just 1.5 volts with advanced astable multivibrator circuitry. ## Overview The Blue Charm Beacons 1.5V LED Flashing Circuit Board is a compact, energy-efficient astable multivibrator circuit that powers a red LED to flash once per second using only a single AA battery. Designed for up to 10 months of continuous blinking, this versatile board supports friction-fit or soldered LED placement, making it ideal for hobbyists, security decoys, and creative signage applications. ## Description UPDATE: This new version of this item now has a flashing rate of one flash per second. This is a low voltage 1.5V astable multivibrator LED flasher circuit board assembly. It includes a red LED that is not yet attached to the circuit board but can easily be temporarily pushed into the through holes (friction fit) for testing and/or soldered into place later. Or you could even add some thin wires and place the LED bulb some distance away. Typically, you can not flash or blink a red LED with only 1.5 volts. This printed circuit board and components overcomes this limitation with an astable multivibrator circuit. The red LED on this configuration will flash approximately 30 times in 30 seconds. The red LED will blink continuously for approximately 10 months on a single fresh alkaline AA battery. Can be used in a wide variety of applications: * In a hobby project such as a train set, model display, 3D box diorama, etc. * As a fake alarm device in a window, above a door, in a car, boat, motorcycle, etc. Just use your ingenuity to figure out how to mount it where you want. * As an attention grabber in a shop window or as part of a shop sign. * Many different applications limited only by your imagination!Specifications: * Contents: 1 x circuit board with components assembled and soldered onto the board (except for the red LED). 1 x 5mm red LED bulb not attached to circuit board. * Dimensions of the board are 14mm x 45mm. The dimension from the top of the tallest component on the board (CK 350 capacitor) to the bottom of the through-hole wires poking out of the bottom of the board is 13.5mm. The red LED bulb is 5mm diameter x 9mm tall. * Requires 1 AA battery. * Battery, battery holder, and wires not included. ## Features - 1.5V astable multivibrator LED flasher with blinking red LED (flashes approximately 30 times in 30 seconds). Many different applications limited only by your imagination! - LED bulb included but not attached to the printed circuit board. It can easily be temporarily pushed into the through holes (friction fit) for testing and/or soldered into place later. Or you could even add some thin wires and place the LED bulb some distance away. - Battery, battery holder, and wires not included. - This circuit board will blink the red LED with a single 1.5V AA battery, which should be impossible, but is accomplished using an astable multivibrator circuit. - The red LED will blink continuously for approximately 10 months on a single fresh alkaline AA battery. - UPDATE: This new version of this item now has a flashing rate of one flash per second. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09BK78D5B | | Best Sellers Rank | #404,696 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13,249 in LED Bulbs | | Brand | Blue Charm Beacons | | Color | red | | Connector Type | through hole | | Customer Reviews | 4.7 4.7 out of 5 stars (7) | | Finish | Printed | | Input Voltage | 1.5 volts | | Item Dimensions | 1.77 x 0.55 x 0.53 inches | | Manufacturer | Blue Charm LLC | | Mfr Part Number | BCP-FA20-N | | Model Number | BCP-FA22-N | | Number of Items | 1 | | Number of Ports | 1 | | Package Quantity | 1 | | Power Plug Type | No Plug | | UPC | 612637579189 | | Unit Count | 1 Count | | Warranty Type | Limited | ## Product Details - **Brand:** Blue Charm Beacons - **Color:** red - **Connector Type:** through hole - **Finish Type:** Printed - **Item dimensions L x W x H:** 1.77 x 0.55 x 0.53 inches ## Images ![1.5V LED Flashing Circuit Board, Blinking LED, 10 Months Flashing on Single AA Battery (not Included), Fake Alarm Light - Image 1](https://m.media-amazon.com/images/I/71j-gDO13gS.jpg) ## Frequently Bought Together - Blue Charm Beacons 1.5V LED Flashing LED Light Circuit Board, Blinking LED, 10 Months Flashing on Single AA Battery (not Included), Fake Alarm Light - 2PCS Compact Circuit Board Flasher to Flash Crossing Signals Alternately PCB006-2-AMUS --- ## 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/525176049-1-5v-led-flashing-circuit-board-blinking-led-10-months](https://www.desertcart.pt/products/525176049-1-5v-led-flashing-circuit-board-blinking-led-10-months) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-26*