How do a change this to normally closed on the relay? do not see how to do this

There is a small 3 pin connector on the RX unit, the unit with 4 wire connections. The 3 pin connector on the top portion of the board has a 2 position jumper cap on it. I believe the left 2 pins make it normally open and the right 2 pins make it normally closed, or vice a versa.

Is there an app for this? There are no directions or instructions. How does it work?

There is no app for this, but there is a instruction in the product package. When used for anti-theft, it needs to be matched with the alarm host. This can not be used alone, but it can also be applied to other devices that require switching signals.

How do i hear the alarm if this is outside and i am inside?

There is no alarm, you would have to wire the relay output to activate one if you wished.

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Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System

Infrared Beam Sensor,1 Pair Single Photoelectric Detector Active IR Alarm Host for Security System

Product ID: 103689492

Details

Brand
IHC
Color
Black
Item Weight
3.76 Ounces
Maximum Range
10 Meters
Power Source
Corded

🌞Strong light resistance up to 50,000 LUX

📏10-meter max detection range

🌧️Fully sealed waterproof & dustproof

€ 36.56

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Description

🚨 Stay ahead of threats with smart, weatherproof infrared security!

PRECISION DETECTION - High-power IR transmitter and 90% sensitivity margin ensure no intruder slips by unnoticed.
ALL WEATHER RESILIENCE - Seamlessly guards your space rain or shine with a fully sealed, fog and insect-proof design.
SMART LIGHT ADAPTATION - Automatically filters and adjusts to strong light sources like car headlights for uninterrupted security.
EFFORTLESS INSTALLATION - Wall-mount design with clear setup instructions means you’re protected in no time.
VERSATILE SECURITY SOLUTION - Perfect for offices, homes, schools, and retail—upgrade your perimeter with professional-grade tech.

This Infrared Beam Sensor pair features a high-power transmitter and receiver with a 10-meter detection range, designed for all-weather durability including waterproof and dustproof sealing. It resists strong light interference up to 50,000 LUX with automatic sensitivity adjustment, making it ideal for professional security setups in homes, offices, and retail environments. Easy to install with wall-mount capability and built-in lightning protection, it ensures reliable, precise intrusion detection in harsh conditions.

Specifications

ASIN	B07FZ1XRXQ
Battery Description	battery not included
Best Sellers Rank	#115,667 in Electronics ( See Top 100 in Electronics ) #401 in Motion Detectors (Electronics)
Brand	IHC
Color	Black
Customer Reviews	4.0 4.0 out of 5 stars (72)
Frequency	1920 KHz
Item Weight	3.76 Ounces
Manufacturer	angshi
Maximum Range	10 Meters
Mfr Part Number	qwe123
Model Number	qwe123
Mounting Type	Wall Mount
Power Source	Corded Electric
UPC	755101238943

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€ 36.56

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

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TrustScore 4.5 | 7,300+ reviews

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