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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Motion Sensor Doorbell for Business, Bed Alarm for Elderly Dementia | Door Chime for Business, Entry Alert Store Welcome Buzzer Monitor , Fall Detection Alarm for Seniors , Caregiver Reminder

Product ID: 72915073

Details

Brand
HENDUN
Color
1 Receiver & 1
Compatible Devices
Motion
Power Source
Battery
Product Dimensions
3.94"L x x

📶918ft wireless range

🔔36 ringtones + 4 volume levels

🛡️13-26ft precise motion detection

€ 49.46

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In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🔔 Stay alert, stay connected—caregiving made effortless!

SMART FALL PREVENTION - Detects foot movement on the floor, reducing false alarms and protecting seniors with dementia.
DUAL POWER FLEXIBILITY - Use AAA batteries for portability or USB-C for continuous power—your choice, your convenience.
EFFORTLESS WIRE FREE SETUP - Pre-paired sensor and receiver for instant, no-fuss installation anywhere.
UNMATCHED LONG RANGE FREEDOM - Stay connected up to 918ft away—perfect for multitasking caregivers and busy professionals.
CUSTOM ALERTS FOR EVERY SITUATION - Choose from 36 melodies and 4 volume levels including silent LED mode to suit day or night.

The HENDUN Motion Sensor Doorbell combines a powerful 918ft wireless range with customizable audio-visual alerts and precise 13-26ft infrared motion detection. Designed for caregivers and businesses alike, it offers easy wire-free installation, multiple ringtones, and smart fall prevention to monitor elderly individuals or secure entrances. Dual power options and silent modes ensure seamless, non-intrusive operation around the clock.

Specifications

ASIN	B077VV8ZJ1
Audible Noise	113 db
Battery Description	Alkaline
Best Sellers Rank	#34,653 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #37 in Door Bells Chimes
Brand	HENDUN
Color	1 Receiver & 1 Transmitters
Compatible Devices	Motion Detector
Control Method	Remote
Customer Reviews	4.4 4.4 out of 5 stars (1,478)
Item Dimensions L x W x H	3.94"L x 1.97"W x 2.76"H
Item Weight	7.04 ounces
Manufacturer	Changzhou Hengdun Electronic Technology Co Ltd
Maximum Range	25.92 feet
Mfr Part Number	43239-217649
Model Number	43239-217649
Mounting Type	Wall Mount
Power Source	Battery Powered
Sensor Technology	Motion Sensor
UPC	664248632944
Unit Count	1 Count

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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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€ 49.46

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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