how do you sinc two receivers to one sensor?

long press the volume key for 3 seconds,enter into learning mode, release the volume key, program starts. The user manual will be introduced in detail.

Can i use power bank as power source?

Yes, you can. Receiver of the bell using 3 5(AA) alkaline batteries or Micro USB supply power( not included), Infrared curtains using 3 7(AAA) alkaline batteries or Micro USB supply power( not included).

how do i buy the remote controller ?

You can buy this https://www.amazon.com/dp/B01HUS7RP0/ref=sr_1_1?ie=UTF8&qid=1529542599&sr=8-1&keywords=B01HUS7RP0

Does the wind cause this to ring?

Thank you for your attention to HENDUN motion sensor doorbell. The wind will not cause the ringing. Thanks again.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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HENDUN Motion Sensor Doorbell, Door Chime for Business, Store Welcome Buzzer Monitor, Commercial Door Entry Alert,Motion Detector Alarm, Caregiver Reminder for Elderly, Visitor Bell Dinger

Product ID: 313939218

Details

Brand
HENDUN
Colour
Black
Compatible devices
Motion
Power source
Battery
Product dimensions
10L x 5W x 7H

📡13-26ft motion detection

📶918ft wireless range

🔔36 selectable ringtones

255.57 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔔 Elevate your entry game—never miss a visitor or alert again!

LONG DISTANCE ALERT - Stay informed up to 918 feet away—perfect for large stores, offices, or multi-room monitoring.
MULTI USE SMART SENSOR - From retail door chime to elderly care alert, this versatile device covers all your professional and personal needs.
ADAPTIVE VOLUME LIGHT - Four volume levels up to 113dB plus adjustable colorful LED lights for discreet or bold notifications.
CUSTOMIZABLE SOUNDSCAPE - Choose from 36 ringtones and 5 business-friendly welcome songs to match your brand’s personality.
EFFORTLESS WIRELESS SETUP - Install in minutes—no wires, no hassle, just instant security and welcome vibes.

The HENDUN Motion Sensor Doorbell is a wireless, motion-activated alert system designed for business and home use. Featuring a 918-foot transmission range, 36 customizable ringtones, and adjustable volume up to 113dB, it offers versatile applications from retail welcome chimes to caregiver reminders. Its easy installation, multi-sensor compatibility, and colorful LED indicators make it a smart, professional-grade solution for modern security and customer engagement.

Specifications

ASIN	B077VV8ZJ1
ASIN	B077VV8ZJ1
Audible Noise	113 Decibels
Battery Description	Alkaline
Best Sellers Rank	#128,694 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #253 in Motion Detectors
Brand	HENDUN
Color	Black
Compatible Devices	Motion Detector
Control Method	Remote
Customer Reviews	4.4 4.4 out of 5 stars (1,404)
Customer reviews	4.4 4.4 out of 5 stars (1,404)
Date First Available	24 February 2018
Is Discontinued By Manufacturer	No
Item Dimensions L x W x H	10L x 5W x 7H centimeters
Item Weight	0.44 Pounds
Item model number	43239-217649
Manufacturer	HENDUN
Manufacturer	HENDUN
Maximum Range	25.92 Feet
Mfr Part Number	43239-217649
Model Number	43239-217649
Mounting Type	Wall Mount
Power Source	Battery Powered
Product Dimensions	10.01 x 5 x 7.01 cm; 199.58 g
Sensor Technology	Photoelectric Sensor
UPC	664248632944
Unit Count	1.0 Count

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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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255.57 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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