Why does the voltage drop to 6V when hot? It works fine for a few minutes then drop when it get hot and could not deliver enough voltage to charge.

The high temperature becomes hot, indicating that the PTC inside the transformer has started the temperature protection function. The transformer will not work again until the temperature cools down after the protection function is started Are you overloaded?

Can this be used on a 16 volt system?

sure ,this transformer output is 16-16.5v 40va

Can this be used to replace a 16 volt unit

I would check with the manufacture minimum voltage requirements. It may work, but with limited results. I would replace with the transformer that was installed with the system.

Can i use this transformer to replace my existing honeywell 1321transformer 25va to power my vista20p panel and envisalink evl-4ezr?

Hello, The Honeywell 1321 supplies 16.5 VAC (Volts AC) just like this one. The Honeywell transformer can only supply 25 VA (volts times amps) whereas this transformer can supply 40 VA. That means that it has more capacity to spare compared to the Honeywell, so it will power the equipment just fine. Short answer: YES. :)

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16.5V 40VA Burglar Alarm Systems and Doorbell Transformer,16.5V Plug in Transformer Compatible with All Versions of Doorbell ，Most Security Panels

Product ID: 251859310

Details

Brand
WUYELIN
Current Rating
2.24 A
Mounting Type
Wall Mount
Power Source
AC
Product Dimensions
2.1"D x 2.5"W

⚡16.5V output power

💡LED power indicator

🔋40VA high capacity

$61.22

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Power your peace of mind with the transformer that never quits!

PLUG PLAY SIMPLICITY - Effortless installation with screw terminals—no electrician needed.
POWER UP YOUR SECURITY - Reliable 16.5V output ensures your alarm and doorbell never underperform.
STABLE SAFE OPERATION - Auto-resetting PTC fuse and LED indicator for peace of mind.
UNIVERSAL COMPATIBILITY - Works seamlessly with Honeywell, DSC, Nest, Skybell, and more.
UPGRADE YOUR DOORBELL GAME - Replace underpowered transformers and enjoy consistent, powerful chimes.

The WUYELIN 16.5V 40VA Burglar Alarm and Doorbell Transformer delivers stable, high-capacity power compatible with most security panels and video doorbells. Featuring easy plug-in installation, a built-in LED power indicator, and a safe auto-resetting fuse, it upgrades your home security system with reliable performance and universal compatibility.

Specifications

ASIN	B088PN111N
Best Sellers Rank	#78,610 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #41 in Door Bell Transformers
Brand	WUYELIN
Brand Name	WUYELIN
Current Rating	2.24 A
Customer Reviews	4.4 out of 5 stars 593 Reviews
Item Dimensions D x W x H	2.1"D x 2.5"W x 3.8"H
Item Weight	0.7 kg
Manufacturer	WUYELIN
Maximum Frequency	60 hertz
Minimum Frequency	60 hertz
Model	782942443762
Mounting Type	Wall Mount
Number of Items	1
Number of Packs	1
Power Source	AC
Product Dimensions	2.1"D x 2.5"W x 3.8"H
Specification Met	RoHS
UPC	782942443762
Unit Count	1 Count

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TrustScore 4.5 | 7,300+ reviews

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$61.22

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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Received my product in pristine condition. Great service overall.

1 month ago

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