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?

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

Does it work with Blaster AS 859

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.

Does this work with gsm systems, it is a 433mhz device . as required by gsm ?

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

How can i pair this unit with a alarm horn that i already have that is your unit and the setting fob .

You can pair as many units as you want. You need to reset and pair all units...old and new.

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KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector for Alarm System

Product ID: 255424949

Details

Brand
KERUI
Colour
white
Maximum range
250 Feet
Mounting type
Wall Mount
Power source
Battery

📡433MHz wireless frequency

🔋Battery-powered, no wiring needed

🚨Instant alarm signal transmission

Description

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

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.

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.

Specifications

ASIN	B00PQ80EIY
ASIN	B00PQ80EIY
Antenna Location	home security
Batteries	1 12V batteries required.
Battery Description	Alkaline
Best Sellers Rank	#236,174 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #473 in Motion Detectors
Brand	KERUI
Color	white
Compatible Devices	KERUI security home alarm system
Customer Reviews	4.2 4.2 out of 5 stars (50)
Customer reviews	4.2 4.2 out of 5 stars (50)
Date First Available	19 August 2016
Frequency	433 Microhertz
Is Discontinued By Manufacturer	No
Item model number	KERUI 433
Manufacturer	KERUI
Manufacturer	KERUI
Maximum Range	250 Feet
Mfr Part Number	0302433KR-P815
Model Number	KERUI 433
Mounting Type	Wall Mount
Number of Batteries	1 12V batteries required.
Power Source	Battery Powered
Product Dimensions	1 x 1 x 1 cm; 109 g
UPC	706551610292

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Received my product in pristine condition. Great service overall.

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