---
product_id: 162777862
title: "Taiss/1 Pair photoelectric Switch 0-20M Through-Beam Reflection Optical Photoelectric Beam Sensor NPN NO photoelectric Sensor Switch 6-36V Proximity Switch with Infrared Ray Beam E3F-20DNL-Z-12MM"
brand: "taiss"
price: "HK$391"
currency: HKD
in_stock: true
reviews_count: 13
category: "Taiss"
url: https://www.desertcart.hk/products/162777862-taiss-1-pair-photoelectric-switch-0-20m-through-beam-reflection
store_origin: HK
region: Hong Kong
---

# 0-20m sensing range Infrared laser beam IP66 weatherproof rating Taiss/1 Pair photoelectric Switch 0-20M Through-Beam Reflection Optical Photoelectric Beam Sensor NPN NO photoelectric Sensor Switch 6-36V Proximity Switch with Infrared Ray Beam E3F-20DNL-Z-12MM

**Brand:** taiss
**Price:** HK$391
**Availability:** ✅ In Stock

## Summary

> 🔴 Elevate your automation game with laser-precise sensing that never quits!

## Quick Answers

- **What is this?** Taiss/1 Pair photoelectric Switch 0-20M Through-Beam Reflection Optical Photoelectric Beam Sensor NPN NO photoelectric Sensor Switch 6-36V Proximity Switch with Infrared Ray Beam E3F-20DNL-Z-12MM by taiss
- **How much does it cost?** HK$391 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/162777862-taiss-1-pair-photoelectric-switch-0-20m-through-beam-reflection)

## Best For

- taiss enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Integration:** Wide 6-36V DC compatibility and NPN normally open output for effortless connection to existing systems.
- • **Built to Brave the Elements:** IP66-rated weatherproof design ensures reliable outdoor and indoor performance rain or shine.
- • **Compact & Durable Form Factor:** Slim 12mm diameter and robust 66mm length fit tight spaces without compromising strength.
- • **Precision Sensing at Distance:** Detect objects up to 20 meters with pinpoint accuracy for seamless automation.
- • **Complete Mounting Kit Included:** Comes with 2 mounting brackets and 120cm cable for quick, hassle-free installation.

## Overview

The Taiss E3F-20DNL-Z-12MM photoelectric switch offers a 0-20 meter infrared laser sensing range with NPN normally open output, housed in a rugged IP66 weatherproof casing. Designed for versatile industrial and security applications, it supports 6-36V DC power and includes mounting brackets and a 120cm cable for easy setup indoors or outdoors.

## Description

Photoelectric Switch can be applied in security system, manufacturing industry. Weatherproof (IP66) construction for indoor/outdoor usage.Safety sensor for garage doors or outdoor gates,Overhead door security sensor,Industrial automation, Detect small objects on manufacturing line,Entry detection for store fronts,Assist in measuring parking distance,Alarm sensor etc.

Review: Easy to setup and precise - Work great for sensing fairly precisely when an assembly part moves into proper position, so an operator can then activate the assembly machine. Easy to setup and adjust.
Review: Red laser, not IR - I’m using this across my 2-car garage to prevent closing the door on my cars. It works fine and the spot size is about 1”-1.5” at 16’. The fact that it is a laser is good since aligning with IR would be impossible. The sensor can be directly connected to a relay board and the relay will close when the beam is broken. I suggest a 12v relay and 12v for the sensor and emitter. I have only begun this project but so far it’s good.

## Features

- This product is widely used in outdoors gates, garage doors, Weatherproof (IP66) construction for indoor/outdoor usage etc.
- Supply Voltage:6-36V DC;Type : NPN（normally open ）;Wire Type : DC 3 Wire,Proximity-sensing / Opposite Type
- Sensory Distance : 0-20m；Sending Light : Infrared Rays;Current : 300mA;Thread diameter: 12mm/0.47"
- Body Size：66mm x12mm/2.6" x0.47"(Max.D*L);Cable Length : 120cm/47";Weight : 70g
- Package Content: 1 Pair x Photoelectric Switch+2 x Mounting Bracket

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VPSSLBR |
| Best Sellers Rank | #68,214 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #33 in Photoelectric Sensors |
| Date First Available | July 25, 2019 |
| Item Weight | 5.6 ounces |
| Item model number | E3F-20DNL |
| Manufacturer | Taiss |
| Package Dimensions | 5.83 x 3.86 x 1.34 inches |

## Images

![Taiss/1 Pair photoelectric Switch 0-20M Through-Beam Reflection Optical Photoelectric Beam Sensor NPN NO photoelectric Sensor Switch 6-36V Proximity Switch with Infrared Ray Beam E3F-20DNL-Z-12MM - Image 1](https://m.media-amazon.com/images/I/51pl-1i1zKL.jpg)

## Questions & Answers

**Q: Could you please provide instructions about wiring and usage?**
A: There is an attached wiring diagram on the switch connecting wire.This product is widely used in outdoors gates, garage doors, Weatherproof (IP66) construction for indoor/outdoor usage etc.
Supply Voltage:6-36V DC;Type : NPN（normally open ）;Wire Type : DC 3 Wire,Proximity-sensing / Opposite Type
Sensory Distance : 0-20m；Sending Light : Infrared Rays;Current : 300mA;Thread diameter: 12mm/0.47"

**Q: will these work as  single unit and trigger if object is sensed by the beam?**
A: Yes. It will send a signal every time the beam is broken thru a 3rd wire. You do have to have a counter or something attached to accept the signal

**Q: what is the switching speed of the npn receiver?**
A: The actual switching time is about 2-3 microseconds on the one I've bought, but the minimum "break" time it responds to reliably seems to be at about 10 milliseconds with a 10K load resistor. you could probably increase the sensitivity with a  larger load resistor but I haven't tried.

**Q: This product is not infrared!.  it is red laser dot.  do you have one that is really infrared (>800nm)?**
A: I don't have one, sorry. Issue an open ended purchase order and I will develop one just for you. Thanks.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to setup and precise
*by G***T on June 23, 2025*

Work great for sensing fairly precisely when an assembly part moves into proper position, so an operator can then activate the assembly machine. Easy to setup and adjust.

### ⭐⭐⭐⭐⭐ Red laser, not IR
*by R***O on February 20, 2023*

I’m using this across my 2-car garage to prevent closing the door on my cars. It works fine and the spot size is about 1”-1.5” at 16’. The fact that it is a laser is good since aligning with IR would be impossible. The sensor can be directly connected to a relay board and the relay will close when the beam is broken. I suggest a 12v relay and 12v for the sensor and emitter. I have only begun this project but so far it’s good.

### ⭐⭐⭐⭐ Review
*by J***Z on August 16, 2025*

Funciona muy bien para alarmas o cosas simples como un sensor de parqueo entre otras, en Ecuador tenemos un deporte llamado 15, muy parecido a frontball, queriamos usar este sensor para cuando toque la linea, este lo detecte pero el sensor no es lo suficientemente rapido en su respuesta haciendolo inutil en ese aspecto, ojo no digo que sea malo, solamente que para detectar objetos a gran velocidad ni al caso.

## Frequently Bought Together

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-02*