---
product_id: 295173968
title: "Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter"
brand: "optex"
price: "฿286"
currency: THB
in_stock: false
reviews_count: 5
url: https://www.desertcart.co.th/products/295173968-optex-td-20u-indoor-outdoor-wireless-infrared-transmitter
store_origin: TH
region: Thailand
---

# Selectable detection patterns 2000 ft. wireless range IP54 weatherproof housing Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter

**Brand:** optex
**Price:** ฿286
**Availability:** ❌ Out of Stock

## Summary

> 🚨 Elevate your security game with wireless precision and weatherproof resilience!

## Quick Answers

- **What is this?** Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter by optex
- **How much does it cost?** ฿286 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/295173968-optex-td-20u-indoor-outdoor-wireless-infrared-transmitter)

## Best For

- optex enthusiasts

## Why This Product

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

## Key Features

- • **Dual Detection Modes:** Switch effortlessly between 50 ft. long-range or 17 ft. wide fan pattern for tailored security coverage.
- • **Effortless Integration:** Enhance your existing Optex Wireless 1000/2000 systems with plug-and-play simplicity.
- • **Rugged Weatherproof Design:** IP54-rated housing ensures reliable performance rain or shine, indoors or out.
- • **Extended 2000 ft. Wireless Reach:** Stay connected across vast indoor and outdoor spaces without signal drop.
- • **Seamless Infrared Motion Sensing:** Passive infrared tech instantly detects movement and triggers alerts with precision.

## Overview

The Optex TD-20U is a versatile indoor/outdoor wireless infrared transmitter featuring a 2000 ft. transmission range, IP54-rated weatherproof housing, and selectable detection patterns (50 ft. long range or 17 ft. fan). Designed to seamlessly integrate with Optex Wireless 1000 and 2000 systems, it delivers reliable motion detection and RF signal transmission for enhanced security coverage.

## Description

Use the Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter enhance your Optex Wireless 2000 and 1000 systems. With a built-in infrared sensor, this wireless transmitter can send alarm signals up to 2,000 feet back to Optex receivers. The Optex T

## Features

- 2000 ft. transmission range, line of sight
- Uses passive infrared to detect motion and send RF signals to receivers
- Weather proof housing (IP54 rating) for both indoor and outdoor use
- Selectable 50 ft. Long Range or 17 ft. Fan (Wide) detection pattern

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Optex |
| Item model number | TD-20U |
| Product Dimensions | 10.16 x 12.7 x 12.7 cm; 249.48 g |
| ASIN | B003XKS826 |

## Images

![Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter - Image 1](https://m.media-amazon.com/images/I/511K-Hjn2TL.jpg)
![Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter - Image 2](https://m.media-amazon.com/images/I/51Ba8M-tHqL.jpg)
![Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter - Image 3](https://m.media-amazon.com/images/I/714tyaH5ReL.jpg)
![Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter - Image 4](https://m.media-amazon.com/images/I/61G7ASChBuL.jpg)
![Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter - Image 5](https://m.media-amazon.com/images/I/610lM0hRX7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Exactly as described
  

*by N***. on Reviewed in Canada on 1 February 2024*

This product works properly and is exactly as described

### ⭐⭐⭐⭐⭐ 







  
  
    Parking Area Alarm
  

*by R***R on Reviewed in the United States on 19 February 2016*

It works . . . BUT you have to VERY CAREFULLY position it and test it to get exactly what you want.  But it does work nicely once it's properly set up. It woke us up at 4:30 a.m. and we found 3 illegal mexicans trying to steal tools out of my truck and two motorcycles.  If not for this going off we would have had no idea that the illegal mexicans were out there trying to steal everything they could get their hands on.  Since we have put up the alarms we keep finding illegal mexicans breaking in.  We have one or two come by, seen with handguns, who find the targets to steal from.  Several nights later two or three come by prepared for the locks and security you installed.  LAPD does not respond or arrest illegal mexicans and warn if you call in not to interfere with the crime.  These sensors have been hard to find when placed in the area, don’t make any sound in the area and gives you a heads up to call police, just not LAPD.  We have a parking area that is too far for Wifi to connect reliably so it is difficult to use cameras and alarms that utilize WiFi

### ⭐⭐⭐⭐⭐ 







  
  
    Great stuff, easy to use and operate!
  

*by S***N on Reviewed in the United States on 11 February 2023*

We have had this brand/system for years, then one sensor was accidentally damaged beyond repair.  We bought a replacement unit, not sure if new would be compatible with the old.  It did!  Followed instructions and “taught” it to recognize old/main system.  In fact, it was so easy that we purchased another one to expand the surveilled area. We love it!

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**Shop now:** [https://www.desertcart.co.th/products/295173968-optex-td-20u-indoor-outdoor-wireless-infrared-transmitter](https://www.desertcart.co.th/products/295173968-optex-td-20u-indoor-outdoor-wireless-infrared-transmitter)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-28*