---
product_id: 407631611
title: "Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20)"
brand: "real instruments"
price: "S$23"
currency: SGD
in_stock: true
reviews_count: 8
category: "Real Instruments"
url: https://www.desertcart.sg/products/407631611-single-beam-sensor-photocell-sensor-beam-detector-outdoor-indoor-security
store_origin: SG
region: Singapore
---

# 1.92 KHz Alarm Frequency IP55 Waterproof Rating 20m Infrared Range Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20)

**Brand:** real instruments
**Price:** S$23
**Availability:** ✅ In Stock

## Summary

> 🚪 Secure your space with invisible precision—because safety should never be seen coming.

## Quick Answers

- **What is this?** Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) by real instruments
- **How much does it cost?** S$23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/407631611-single-beam-sensor-photocell-sensor-beam-detector-outdoor-indoor-security)

## Best For

- real instruments enthusiasts

## Why This Product

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

## Key Features

- • **Smart Light Immunity:** Built-in filter resists strong light up to 50,000 lux, preventing false alarms.
- • **All-Weather Durability:** IP55-rated waterproof and dustproof design keeps your system running rain or shine.
- • **Effortless Installation:** Quick setup with vertical alignment and clear step-by-step guidance for professional-grade security.
- • **Advanced Signal Processing:** High-power transmitter with digital filtering ensures ultra-sensitive and stable detection.
- • **Precision Infrared Barrier:** Reliable 20-meter detection range for seamless security coverage.

## Overview

The Real Instruments ABO-20 Single Beam Sensor is a cutting-edge infrared barrier detector designed for both indoor and outdoor security applications. Featuring a 20-meter detection range, IP55 waterproof housing, and advanced light-filtering technology, it delivers reliable, weather-resistant performance. Ideal for offices, homes, and commercial spaces, this sensor integrates seamlessly with alarm and access control systems, offering professional-grade protection with easy installation.

## Description

Product Description Motion Sensor SAFE AND RELIABLE : The Pair of Infrared Detectors Can Reliably Generate Visible Infrared Rays Up To 20 Meters Long. The Barrier Detector Frequency of the Single Beam Alarm Is 1.92 Khz, The Power Supply Is 12 V Dc and The Wavelength Is 940 Nm. WATERPROOF MATERIAL : IP55 Rain Cover (Fog), Dust (Worm), And Other Comprehensive Weather-related Sealed Structures, Infrared Detector Can Maintain Normal Operation in Harsh Environments. In Severe Weather (Fog, Rain, Dust, Etc.) The Range of the Infrared Detector Can Be Reduced To 30%. WIDE APPLICATION : The Infrared Detector Is Suitable for Security Systems in Schools, Office Buildings, Hospitals, Parking Lots, Apartments, and Other Places. The Barrier Detector is Widely Used in Alarm Systems, Access Control Systems, Etc. Single Beam Light Radar UNIQUE LOOK : High-power Transmitter, 90% Sensitivity Margin, High-power Infrared Transmitter-receiver Pair Tube, Low-power Processing Technology Lightning Protection Circuit. High Level of Rfi/emi Capability and Unique Digital Filter Circuit. ACTIVE REGULATION : Resistant to Strong Light Up To 50,000 Lux, Built-in Automatic Adjustment of a Strong Light Filter System, To Avoid the Impact of Strong Light or Car Lights. Moreover, The Detector Will Automatically Enhance Sensitivity When Encountering Heavy Fog or Bad Weather. (Agc Circuit) INSTALLATION : The Best Installation Height Should Be More Than 20 cm, Installation Distance Should Be Not Less Than 1 M; Infrared Protection Device Should Be Vertically Placed, And in The Same Horizontal Line. First, Please Install the Receiver, Then the Transmitter (When in A Straight Line, Off Light of Receiver Goes Out), Then fix, connect Line and Complete Installation.

## Features

- ✅【𝐒𝐀𝐅𝐄 𝐀𝐍𝐃 𝐑𝐄𝐋𝐈𝐀𝐁𝐋𝐄】: The Pair Of Infrared Detectors Can Reliably Generate Visible Infrared Rays Up To 20 Meters Long. The Barrier Detector Frequency Of The Single Beam Alarm Is 1.92 Khz, The Power Supply Is 12 V Dc And The Wavelength Is 940 Nm.
- ✅【𝐖𝐀𝐓𝐄𝐑𝐏𝐑𝐎𝐎𝐅 𝐌𝐀𝐓𝐄𝐑𝐈𝐀𝐋】: IP55 Rain Cover (Fog), Dust (Worm) And Other Comprehensive Weather-related Sealed Structures, Infrared Detector Can Maintain Normal Operation In Harsh Environments. In Severe Weather (Fog, Rain, Dust, Etc.) The Range Of Infrared Detector Can Be Reduced To 30%.
- ✅【𝐖𝐈𝐃𝐄 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍】: The Infrared Detector Is Suitable For Security Systems In Schools, Office Buildings, Hospitals, Parking Lots, Apartments And Other Places. The Barrier Detector Widely Used In Alarm Systems, Access Control Systems, Etc.
- ✅【𝐔𝐍𝐈𝐐𝐔𝐄 𝐃𝐄𝐒𝐈𝐆𝐍】: High-power Transmitter, 90% Sensitivity Margin, High-power Infrared Transmitter-receiver Pair Tube, Low-power Processing Technology Lightning Protection Circuit Design.high Level Of Anti Rfi/emi Capability And Unique Digital Filter Circuit Design.
- ✅【𝐀𝐂𝐓𝐈𝐕𝐄 𝐑𝐄𝐆𝐔𝐋𝐀𝐓𝐈𝐎𝐍】: Resistant To Strong Light Up To 50,000 Lux, Built-in Automatic Adjustment Of Strong Light Filter System, To Avoid The Impact Of Strong Light Or Car Lights.moreover, The Detector Will Automatically Enhance Sensitivity When Encountering Heavy Fog Or Bad Weather.(Agc Circuit)
- ✅【𝐈𝐍𝐒𝐓𝐀𝐋𝐋𝐀𝐓𝐈𝐎𝐍】: The Best Installation Height Should Be More Than 20 cm, Installation Distance Should Be Not Less Than 1 M; Infrared Protection Device Should Be Vertically Placed, And In The Same Horizontal Line.first, Please Install The Receiver, Then The Transmitter(When In A Straight Line, Off Light Of Receiver Goes Out), Then Fix,connect Line And Complete Installation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SB9TXJC |
| Antenna Location | Security and Access Control |
| Battery Description | Battery not included |
| Best Sellers Rank | #4,271 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Photoelectric Sensors |
| Brand | Real Instruments |
| Built-In Media | 1 X Beam Sensor, 1 X User Manual, 1 X Retail Box |
| Colour | Black |
| Compatible Devices | Alarm System, Access Control System, Security System, Smart Home Hub |
| Country of Origin | India |
| Customer Reviews | 3.7 out of 5 stars 125 Reviews |
| Frequency | 1.92 KHz |
| Item Dimensions D x W x H | 40D x 30W x 20H Millimeters |
| Item Type Name | Beam Sensor |
| Item Weight | 300 Grams |
| Manufacturer | Real Instruments |
| Maximum Range | 100 metres |
| Mfr Part Number | ABO-20 |
| Model Number | ABO-20 |
| Mounting Type | Door Mount |
| Packer Contact Information | Real Instruments |
| Power Source | Power |

## Product Details

- **Brand:** Real Instruments
- **Colour:** Black
- **Item Weight:** 300 Grams
- **Maximum Range:** 100 metres
- **Power Source:** Power

## Images

![Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) - Image 1](https://m.media-amazon.com/images/I/51jyZao7ntL.jpg)
![Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) - Image 2](https://m.media-amazon.com/images/I/51pbOvDPdQL.jpg)
![Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) - Image 3](https://m.media-amazon.com/images/I/51-XKRyEu+L.jpg)
![Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) - Image 4](https://m.media-amazon.com/images/I/61A-8AptzTL.jpg)
![Single Beam Sensor Photocell Sensor Beam Detector Outdoor Indoor Security Laser IR Infrared Barrier Detector Photoelectric for Gates Safety Security System Automatic Doors (ABO-20) - Image 5](https://m.media-amazon.com/images/I/41qQcYYknRL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: How to connect this product to an wifi alarm**
A: Only a Instrument Technician can understand it's circuit and connect it with alram components !! 
It's a raw sensor relay only you have to make further circuit connections !! 
Overall performace is good and as discribed.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by I***E on 17 November 2025*



### ⭐⭐⭐⭐ Review
*by A***R on 27 August 2025*



### ⭐⭐⭐⭐⭐ Review
*by K***. on 7 September 2025*



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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-05-07*