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

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

Product ID: 21420612

Details

Brand
KERUI
Color
white
Maximum Range
250 Feet
Mounting Type
Wall Mount
Power Source
Battery

📏250 Feet Range

📡433MHz Frequency

🔋9V Battery Powered

Description

🚨 Secure Your Space, Elevate Your Peace of Mind!

INSTANT ALERTS - Receive immediate notifications upon motion detection.
WIRELESS FREEDOM - Say goodbye to messy wires and hello to sleek installation.
USER FRIENDLY SETUP - Quick installation with just one 9V battery.
LONG RANGE DETECTION - Covers an impressive 250 feet for maximum security.
SEAMLESS INTEGRATION - Effortlessly connects with KERUI security systems.

The KERUI 433MHz Home Wireless PIR Infrared Motion Sensor Detector is a cutting-edge security solution designed to seamlessly integrate with your KERUI alarm system. With a wireless design, it offers a maximum detection range of 250 feet, ensuring comprehensive coverage. Powered by a single 9V battery, this motion sensor is easy to install and operate, making it an essential addition to your home security arsenal.

Specifications

ASIN	B00PQ80EIY
Antenna Location	Walkway, Terrace, Garden, Sidewalk, Lawn, Driveway, Garage
Best Sellers Rank	#182,808 in Electronics ( See Top 100 in Electronics ) #684 in Motion Detectors (Electronics)
Brand	KERUI
Color	white
Compatible Devices	KERUI security home alarm system
Customer Reviews	4.3 out of 5 stars 53 Reviews
Frequency	433 microhertz
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.
Number of Items	1
Power Source	Battery Powered
UPC	706551610292

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How is product pricing calculated?+

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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