---
product_id: 255424949
title: "KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System"
brand: "kerui"
price: "$4.56"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/255424949-kerui-433mhz-home-wireless-pir-infrared-motion-sensor-detector-alarm
store_origin: US
region: United States of America
---

# 433MHz wireless frequency Battery-powered, no wiring needed Instant alarm signal transmission KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System

**Brand:** kerui
**Price:** $4.56
**Availability:** ❌ Out of Stock

## Summary

> 🚨 Stay one step ahead—wireless security that moves with you!

## Quick Answers

- **What is this?** KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System by kerui
- **How much does it cost?** $4.56 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/255424949-kerui-433mhz-home-wireless-pir-infrared-motion-sensor-detector-alarm)

## Best For

- kerui enthusiasts

## Why This Product

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

## Key Features

- • **Enhanced Signal Range:** Built-in root antenna boosts signal strength for reliable home-wide coverage.
- • **Effortless Installation:** Completely wireless design powered by 9V batteries—no messy cables or professional setup required.
- • **Instant Intruder Alerts:** Triggers and sends alarm signals immediately upon detecting motion within range.
- • **Smart Security Ecosystem:** Designed exclusively to work with KERUI alarm systems, creating a synchronized defense network.
- • **Seamless Wireless Integration:** 433MHz frequency ensures stable, interference-free connection with your KERUI alarm system.

## Overview

The KERUI433MHz Home Wireless PIR Infrared Motion Sensor Detector offers a cutting-edge, battery-powered wireless solution for home security. Operating at 433MHz frequency with a built-in root antenna, it reliably detects motion and instantly sends alarm signals to your KERUI control center. Designed for easy wall mounting and seamless integration, this sensor enhances your home alarm system with hassle-free installation and robust coverage.

## Description

Note:1. Not all the PIR Motion Detector can work with your alarm system,please let me know what kind of alarm system in your hand before you order. It must work wit the alarm system.2.If the motio sensor be installed outside, it's best to mount in a shady, protected place with minimal changing temperatures.3.If you have any questions,please contact us without hesitation,our support email :fuers.csc01@outlook.com,we will offer you best service at our working time 6PM~4AM PSTTechnical parameters:Wireless Frequency:433MHz /1527 /4.7Mω  Detected Distance : 5-8m  Transmit Distance : approx 100m (no obstacle)  Detect angle : Horizontal: 110°, Vertical: 60°  Working Condition : Temperature : -10°C ~ 40°C (approx 14°F ~ 104°F)  Humidity : ≤ 90 %  Suitable for bedroom, living, kitchen, lobby, corridor...etc.  Power Supply : 9V battery x 1 pcs (battery included)  Static current : I1≤30mA  Alarm current : I2≤20μA  Transmission Time : ≧1s   Package Include:  1 X 433 MHz Wirless PIR Sensors(BATTERY INCLUDED)

## Features

- Motion detector - The motion sensor can detect any movement within the detection range
- Works totally wireless - Does not need to be wired to the control center and the motion sensor has a root antenna can enhance the signal
- Can't work standalone - Work with KERUI security home alarm system
- Send alarm signal - It will send the alarm signal to control host once a alarm be triggered
- 1pcs battery required - 9V 6F22 battery powered and easy to install and operate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KERUI |
| Part number | 0302433KR-P815 |
| Item Weight | 109 g |
| Package Dimensions | 13.59 x 6.6 x 4.8 cm; 109 g |
| Batteries | 3 9V batteries required. |
| Item model number | KERUI 433 |
| Color | white |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Plug Profile | Wall Mount |
| Batteries Included? | No |
| Batteries Required? | Yes |
| tech_spec_battery_description_toys | Alkaline |

## Product Details

- **Brand:** KERUI
- **Colour:** white
- **Power source:** Battery Powered
- **Maximum range:** 250 Feet
- **Mounting type:** Wall Mount

## Images

![KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System - Image 1](https://m.media-amazon.com/images/I/51GlSQPOZZL.jpg)
![KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System - Image 2](https://m.media-amazon.com/images/I/71-cVLoX24L.jpg)
![KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System - Image 3](https://m.media-amazon.com/images/I/61qBfLbIGML.jpg)
![KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System - Image 4](https://m.media-amazon.com/images/I/71CyJAAirZL.jpg)
![KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System - Image 5](https://m.media-amazon.com/images/I/71T83jUkAEL.jpg)

## Questions & Answers

**Q: The box and the instructions say "led on/off optional", but don't say how. how do you set the led off but unit on?**
A: HI friend，
There is just power button, you can turn on/off the PIR sensor.
If any other problem,please feel free to contact us via Amazon message or after-sale email fuers.csc01@outlook.com

**Q: Does it work with Blaster AS 859**
A: Hi friend,
Generally our company's item works with ours, we are not sure whether it can work with other company's, it may have conflict, we advise to choose to use KERUI brand alarm. Thanks.

**Q: Does this work with gsm systems, it is a 433mhz device . as required by gsm 
?**
A: Dear friend.
The KERUI PIR sensor work with KERUI brand GSM alarm.
If any othe rproblem,please feel free to contact us via Amazon message or after-sale email fuers.csc01@outlook.com

**Q: How can i pair this unit with a alarm horn that i already have that is your unit and the setting fob .**
A: You can pair as many units as you want. You need to reset and pair all units...old and new.

## Frequently Bought Together

- KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System
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- KERUI Home Security System Indoor Outdoor Weather-Proof Siren Window Door Sensors Motion Sensor Alarm with Remote Control More DIY, Wireless House Hotel Garage Shop Burglar Door Alarm, NO WIFI/GSM/APP

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-26*