If you are going to do a hardwire alarm set-up this is a good place to start. Mine works well and has no issues.

This is a great price for a new and up-to-date 20P. Resistors, lock/key and documentation provided were complete. However, be aware that although the image on the main page showed the unit with a battery, the unit received did NOT have a battery. Also, the image did NOT show a power transformer but the unit did come with the necessary power transformer. Neither the battery nor transformer are mentioned in description. Hopefully this will be corrected by the seller, and if not for this I'd have rated this listing with 5 stars. As for the batteries: Typical Vista 20P kits that are furnished with a battery include a small (4.5ah) 12V battery. I have learned that this small capacity battery is hardly sufficient to sustain a typical system over repeated or extended power outage(s), as necessary to ensure reliability for security and emergency (i.e. panic & fire/smoke detectors). My practice has been told to use no less than a 7ah battery in a Vista 20P at a minimum. Even then, one must consider that batteries are "living" things and will degrade over time, even if not used. For this reason I run my Vista systems with two 7ah batteries in parallel (providing 14ah support to the Vista), and also with the power transformer connected to a UPS. Using the UPS helps protect the Vista power supply from utility/power line fluctuations and spikes, from lightening damage, and also prevents discharge/recharge cycles on the Vista batteries thereby extending their service life too. I replace my batteries in my UPS every two years and in my Vista 20P's every three years. Failure to regularly replace batteries can also lead-to equipment failures because the battery cells can short-circuit thereby drawing higher current from the power supply. Disclaimer: I am not an authority on this subject matter. The statements made are my own opinion and may not be accurate. Use them at your own risk.

This is one powerful system for the DIY alarm install. Highly recommended.

After my second home was broken into, and the front door left open for who knows how long, I decided I wanted an alarm. After much research, and not wanting to deal with contracts, salesmen and high monthly fees, I ended up with this panel and a totally expandable professional system that texts me when the alarm is disarmed, armed, fire, trouble, flood, and of course if a break-in occurs.

The basics of the system are the 20P panel, the 15P would be fine for most,unless you have more than six wired zones, the EVL-4 Eyezon IP communicator, which requires a hardwired connection to the router, and mounts inside the cabinet, 12 volt back up battery, required as it drives the siren as well as power failure back-up, siren, and don't go for anything less than the 6160RF keypad. The RF denotes that the keypad is capable of receiving and transmitting to wireless devices. Even if you don't think you'll want or need wireless, once you read up and see all the endless possibilities of the wireless devices and sensors, you'll be glad you spent the little extra to go RF.

If you don't own a drill, wire strippers, or maybe even a soldering iron, and willing to roll up your sleeves and learn a little about all the well thought out and time proven nuances and actually read the manual-then this is probably not the system for you. Just looking at the manual and all the options are a bit overwhelming, but once you dig in, only a few of the actual programming prompts need to be changed. Each zone needs to be told how to react to the sensor, but just read and check out a few youtube videos. You don't need to be a computer programmer or rocket scientist-Just be willing to invest a little time and energy during the install, and you won't need to touch it again unless you want to do some upgrades and enhancements, which I'm sure most techie types will be fascinated by the possibilities. I'm working to install an electric water valve in the main water line, so the water is shut off when armed in away mode-no flood worries!

Received the latest 10.23 version. Works perfectly. I upgraded an older version 1.4 Vista 20P to this without any problems. I moved the wires one by one from old to new. Then I simply went through and read all of the configuration information from the existing unit and then programmed it into the new unit; all of this work is done through the alpha numeric keypad on the system. No issues whatsoever!