Will this work with the older Vista 20se

I also had a Vista 20SE. The module would not work with it. I purchased a Vista 20P panel for $48, and made a terminal-screw for terminal-screw swap of the board, then re-programmed the board. Note: You have to reprogram the new board to match what was on the old one. So if you don't have your programming cheat-sheet, then you will need to cycle through all the settings on the old board, write them down, and then program them into the new board. And then you will need to make the necessary changes to support the EVL-4. Plan to spend the day doing it. Or two. Mine has been up and running for two years now.

I bought a home with a DSC 1616 panel & RFK5564 keypad that was installed by ADT. I don't know the master codes. Can I still use this?

Installer code should either be 6321 or the last 4 of the previously used account number. If you cannot find out the last 4 ADT might tell you if you call and explain the situation. Otherwise like previous answers mentioned you would have to default the panel by placing a jumper between pgm1 and zn1, power up panel for 5 seconds than power back down and remove jumper. That will default the panel and will need to be programmed from scratch

Can I use this module with tuxedo touch wifi keypads ?

If you have a tuxedo touch you are already able to connect to it through its built in web browser locally. Forward a single port on your router, set a local static ip to the tux and match that ip and port in your router. This way you'll be able to remote into the tux from anywhere and have full access of your alarm and automation. Updated firmware UV the tux will also give you email notifications.

The 4 wires from evil to what pins on Honeywell 20P panel (pins 1 through 16)? Note that 20p pins have no colors name written.

Terminals are numbered from left, starting with #1. Black 4, red 5, green 6 and yellow 7. Same terminals as the key pad(s).

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EyezOn Envisalink EVL-4EZR IP Security Interface Module for DSC and Honeywell (Ademco) Security Systems, Compatible with Alexa

Product ID: 20407505

Details

Brand
EYEZON
Color
Blue
Compatible Devices
Honeywell DSC
Item dimensions L x W x H
4.7 x 3.1 x
Power Source
Corded

📶Reliable IP connectivity

🔒Supports Honeywell & DSC systems

🗣️Alexa voice control compatible

54.98 OMR

Duties & taxes included

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Description

🔐 Own your security, ditch the fees, and stay connected like a pro.

DIY EMPOWERMENT - Take full control of your home security without monthly monitoring fees or technician visits.
ROBUST COMPATIBILITY - Works flawlessly with Honeywell Vista panels, DSC systems, and integrates with Alexa for voice commands.
INSTANT MOBILE ALERTS - Receive real-time notifications and sensor status updates directly on your smartphone.
SEAMLESS IP INTEGRATION - Connect your legacy Honeywell or DSC alarm system to modern IP networks effortlessly.
FUTURE PROOF YOUR SECURITY - Avoid costly service hikes and obsolete hardware by upgrading to a flexible, user-maintained solution.

The EyezOn Envisalink EVL-4EZR is a compact IP interface module designed to connect Honeywell and DSC alarm systems to your home network. It enables remote monitoring and control via smartphone apps, supports Alexa voice commands, and empowers users to self-manage their security system without recurring monitoring fees. With easy installation and robust compatibility, it offers a cost-effective, future-proof alternative to traditional monitored security services.

Specifications

ASIN	B016WQTJ4S
Alert Type	Motion
Antenna Location	Cellular Phone
Assembly Instructions Description	Easy to install with clear instructions
Best Sellers Rank	#109 in Home Security Systems
Brand	EYEZON
Built-In Media	EVL-4EZR Module, mounting stand-offs, 2-way tape, connecting wire, installation guide
Color	Blue
Compatible Devices	Honeywell Vista, DSC, Alexa
Connectivity Technology	Wired
Control Method	Remote, Voice
Customer Reviews	4.6 4.6 out of 5 stars (1,519)
Installation Method	Self-Adhesive
Item Dimensions	4.7 x 3.1 x 1.2 inches
Manufacturer	EyezOn
Mfr Part Number	EVL-4EZR
Model Number	EVL-4
Power Source	Corded Electric
UPC	181875000040 760999031644
Unit Count	1 Count
Voltage	1.5 volts

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