---
product_id: 435582343
title: "Alinan 4sets KY-008 3pin 650nm 5V Laser Transmitter Sensor Module with Laser Sensor Module Non-Modulator Tube Laser Receiver Detection Module Relay Switch 5V for Arduino/AVR PIC"
brand: "alinan"
price: "$50.73"
currency: USD
in_stock: true
reviews_count: 5
category: "Alinan"
url: https://www.desertcart.ec/products/435582343-alinan-4sets-ky-008-3pin-650nm-5v-laser-transmitter-sensor
store_origin: EC
region: Ecuador
---

# Stable 5V power supply operation Compact 15x24mm transmitter size 650nm visible red laser wavelength Alinan 4sets KY-008 3pin 650nm 5V Laser Transmitter Sensor Module with Laser Sensor Module Non-Modulator Tube Laser Receiver Detection Module Relay Switch 5V for Arduino/AVR PIC

**Brand:** alinan
**Price:** $50.73
**Availability:** ✅ In Stock

## Summary

> 🚀 Light up your projects with precision and power!

## Quick Answers

- **What is this?** Alinan 4sets KY-008 3pin 650nm 5V Laser Transmitter Sensor Module with Laser Sensor Module Non-Modulator Tube Laser Receiver Detection Module Relay Switch 5V for Arduino/AVR PIC by alinan
- **How much does it cost?** $50.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/435582343-alinan-4sets-ky-008-3pin-650nm-5v-laser-transmitter-sensor)

## Best For

- alinan enthusiasts

## Why This Product

- Trusted alinan brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete 4-Set Kit:** Includes 4 laser transmitters and 4 receivers—perfect for multi-point sensing or complex laser tripwire systems.
- • **Reliable Indoor Use:** Optimized for dark environments to eliminate interference from ambient light sources.
- • **Precision Laser Detection:** 650nm wavelength ensures sharp, visible laser targeting for pinpoint accuracy.
- • **Compact & Lightweight Design:** Small 15x24mm modules fit effortlessly into any DIY or professional project setup.
- • **Plug-and-Play 5V Compatibility:** Seamlessly integrates with Arduino, AVR, and PIC microcontrollers for hassle-free prototyping.

## Overview

The Alinan 4sets KY-008 Laser Transmitter and Receiver Modules operate at a visible 650nm wavelength with a stable 5V supply, designed for indoor use in low-light environments. Compact and compatible with popular microcontrollers like Arduino, these modules come in a complete 4-set kit, ideal for laser detection, tripwires, and relay switch projects requiring precise laser sensing.

## Description

KY-008 Laser Transmitter Module: Operating Voltage: 5V Output Wavelength: 650 nm 3 pins module Size: 15 * 24mm Laser Receiver Sensor Module: Supply Voltage: 5V. Size: 15.2x22.2mm/0.60x0.84Inches. Output: Output high level when there is laser irradiation.Output low level when no laser irradiation. When the laser irradiation, the high level action relay module does not operate.Relay module action with high level action when laser front irradiates, relay module action with high level action when laser back irradiates. Package Included: 4pcs x KY-008 Laser Transmitter Module 4pcs x Laser Receiver Sensor Module

Review: Received as described and in time frame promised.
Review: I got these for a project involving a laser tripwire. The idea was to connect the sensor wire from the receiver module to an NPN transistor controlling the ground of a buzzer. Problem is as far as I can tell the PCB with the receiving module does nothing at all. The same sensor leg voltages were present with and without the actual sensor connected to the PCB. If I pulled the sensor off that little receiver PCB and put it on my breadboard I got all the same readings. Im not sure why that PCB is needed. This is unable to control a tiny NPN transistor since the receiving sensor leg only rises to 300mv with the laser shining on it in a dark room from 2-3" away. That's not sufficient to control a transistor. That meant I had to include an O amp into my otherwise super simple circuit. It probably works fine with an Arduino or other controller, but does not work in a simple circuit.

## Features

- ★This sensor uses a non-modulated laser receiver. Please use it in a place where there is no light indoors. Sunlight or other lamps may interfere. It is recommended to use it in a dark environment.
- 【Output】: High level when there is laser irradiation; Low level when there is no laser irradiation.
- 【Supply Voltage】: 5V
- 【Size】: KY-008 Laser Transmitter Module: 15 * 24mm; Laser Receiver Sensor Module: 15.2x22.2mm/0.60x0.84Inches.
- 【Package Included】: 4pcs x KY-008 Laser Transmitter Module; 4pcs x Laser Receiver Sensor Module.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09TP51ZTJ |
| Best Sellers Rank | #72,103 in Computers ( See Top 100 in Computers ) #1,000 in Single-Board Computers |
| Item model number | Alinan |
| Manufacturer | Alinan |
| Package Dimensions | 10.39 x 7.19 x 2.21 cm; 32 g |

## Product Details

- **Brand:** Alinan
- **Item weight:** 0.03 Kilograms
- **Material:** Iron
- **Shaft diameter:** 24 Millimeters
- **Voltage:** 5 Volts

## Images

![Alinan 4sets KY-008 3pin 650nm 5V Laser Transmitter Sensor Module with Laser Sensor Module Non-Modulator Tube Laser Receiver Detection Module Relay Switch 5V for Arduino/AVR PIC - Image 1](https://m.media-amazon.com/images/I/711Z+HtjYDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***Y on 17 March 2025*

Received as described and in time frame promised.

### ⭐⭐ Review
*by J***H on 21 October 2025*

I got these for a project involving a laser tripwire. The idea was to connect the sensor wire from the receiver module to an NPN transistor controlling the ground of a buzzer. Problem is as far as I can tell the PCB with the receiving module does nothing at all. The same sensor leg voltages were present with and without the actual sensor connected to the PCB. If I pulled the sensor off that little receiver PCB and put it on my breadboard I got all the same readings. Im not sure why that PCB is needed. This is unable to control a tiny NPN transistor since the receiving sensor leg only rises to 300mv with the laser shining on it in a dark room from 2-3" away. That's not sufficient to control a transistor. That meant I had to include an O amp into my otherwise super simple circuit. It probably works fine with an Arduino or other controller, but does not work in a simple circuit.

### ⭐⭐⭐⭐⭐ Review
*by L***S on 11 May 2024*

Works great. Easy to interface with arduino.

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-22*