Adel Keyless Biometric Fingerprint Door Lock Trinity 788 Review

Reversible Handle|Three Access Methods | Easy Installation

Protect your home or office with biometric levels of security with the reversible Trinity 788 Fingerprint Door Lock from ADEL. With simple installation, you’re guaranteed professional-grade security in minutes. Three levels of entry: ultra-fast fingerprint scanning, passcode protection, and an emergency mechanical key give you multiple customizable ways to keep out unwanted entrants. This lock’s reversible handle accommodates left or right opening doors and a solid metal construction resists breakage and vandalism.

The lock itself operates on four included AA batteries, and features warning beeps and a red indicator light to let you know when the batteries are low. The Trinity 788 features an external 9 volt power input located on the bottom of the lock so if your battery is flat, all you have to do is take a 9 volt, touch the power input and you have power.

Program up to 99 users quickly and easily, and elevate your home and business security to the 21st century with simple, affordable biometric technology.

Three way to unlock: Fingerprint, Pin and Key

Our Review Of Adel Keyless Biometric Fingerprint Door Lock

Adel Keyless Biometric Fingerprint Door Lock contains a body recognition device that allows preprogrammed individuals entry to your door. The recognition is based on physical characteristics such as your retina/iris, handprints, or fingerprints. This kind of devices increases security by stopping unauthorised access. There are numerous types of locks that can be fitted with different levels of sensitivity. This type of devices can be used both by businesses and homes for your peace of mind. Due to technology becoming increasingly popular, this recognition system is available to the public at a great price.
Adel has introduced a fingerprint door lock that can help you to keep your home or business safe.


Biometric locks have become very popular lately. This type of device is being used in offices, homes, and even airports too. The product dimension is 12 x 8 x 12 inches and weighs only 5.8lbs. The door lock has three separate ways to unlock it: fingerprint, key and pin. It fits into a standard 2-1/8” diameter hole with a thickness of 1-5/32 to 2-3/8 according to the USA standard.
The Trinity 788 is powered by a peripheral 9-volt charge that is located on the bottom of the lock.
This product can hold up to 99 fingerprints. It is also easy to install and comes paired with an app for easy monitoring.


Trinity offers three different lock systems in case you need more than the biometric capacity. It stores up to 99 fingerprints into its database which is more than enough for your home and business. It is a great solution for a house or a smaller building, and you can trust that only recognised individuals will be able to get inside. To unlock the door you can mechanically lock it, enter a numerical pin, or scan your fingerprint. You can even require all three of these so that the door lock is virtually unbreakable.

You can Protect your home or office with biometric security with the Trinity 788 Fingerprint Door Lock from ADEL. You’re guaranteed to get increased security the moment you install it. The three levels of entry allow you extra security to keep even the smartest intruders out. This lock even comes with an adjustable installation to fit left or right handed doors. Its solid metal construction will make it impossible to break or wreck.

The lock itself requires four AA batteries, which are included, and will give you cautionary beeps when it is time to replace them. The red indicator light will show you when the batteries are low so you never go without your security. It easily programs up to 99 different fingerprints providing the most secure home and business around.


This Adel Keyless Biometric Fingerprint Door Lock Trinity 788 is only $98.99. Taking all the features under consideration I would absolutely recommend this to anyone who is looking for a good Biometric Door lock.

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