Your EMBENLY Secure Smart Door Knob gives you three ways to open the door: your fingerprint, the app, or an emergency key. Having more than one way in helps when something doesn't work the first time, and it pays to know what to do.
This guide walks through four situations: the lock won't turn on, a fingerprint won't read, the battery runs low, and your phone won't connect over Bluetooth. Each fix below follows the product's own guidance.
The Quick Version
- Lock won't turn on: Remove the knob cover and peel off the battery insulating film.
- Fingerprint won't read: Use a clean, dry finger on the center of the sensor.
- Battery is low: Seven beeps means it's time to replace the CR123A battery.
- Phone won't connect: Turn on Bluetooth and touch the fingerprint area to wake the lock.
The Lock Won't Turn On After Installation
If you have just installed the knob and nothing happens, check the battery first. Before first use, you need to remove the knob cover and peel off the battery insulating film. If the film is still in place, the lock cannot turn on.
The package includes one CR123A battery, so you have what you need to get started.
A Fingerprint Won't Read
Start with these basics:
- Use a clean, dry finger.
- Place it on the center of the sensor. Clean, dry fingers centered on the sensor give the reader what it needs for full recognition.
- Use your thumb if you can. The reader sits at the top of the knob, at a natural angle for your thumb, so you never have to hunt for it.
The reader also has a self-learning function that adapts to subtle changes from each scan. In other words, recognition is designed to get faster and smoother the more you use it. As a reference, the lock identifies a saved fingerprint in approximately 0.2 seconds and unlocks in approximately 1.5 seconds.
What Happens After Repeated Misses
After 5 failed attempts, the lock pauses for 2 minutes. You don't have to wait it out. You can still unlock the door with the app or your emergency key right away. When the pause ends, try again with a clean, dry finger centered on the sensor.
The knob can store up to 50 fingerprints, so everyone in the household can have their own.
The Battery Is Running Low
The lock runs on a single CR123A battery. When the battery gets low, the lock gives you a warning: seven beeps.
Don't panic when you hear them. When the battery is low, the lock still works normally for about a week. That gives you time to pick up a new battery, but replace it right away rather than waiting. It is also a good idea to keep a spare CR123A battery at home so you are never caught without one.
If the Battery Runs Out Completely
If the battery dies before you can replace it, connect a power bank to the lock's Type-C port with a Type-C cable. This supplies temporary emergency power so you can unlock the door.
A few things to keep in mind:
- The power bank works for a one-time unlock. It does not charge the battery.
- Don't leave the cable plugged in for long.
- Change the battery right after using emergency power.
Your Phone Won't Connect Over Bluetooth
If the app can't find the lock, work through this short checklist:
- Make sure Bluetooth is turned on for your phone.
- Wake the lock by touching the fingerprint area first.
- Stay close to the door. Bluetooth app control works within a range of about 10 meters.
- Check for other devices. The knob may automatically connect to other nearby phones, so confirm that no nearby devices are paired.
Once nearby devices are cleared, you should be able to connect smoothly.
Your Backup Options
The knob is designed so you always have another way in: your fingerprint, the app, or an emergency key. The app connects to the lock over Bluetooth, with an effective range of up to 10 m, so you need to be near the door to use it. The package comes with two mechanical keys, so keep one somewhere safe and easy to reach. If the battery is empty, a Type-C cable and a power bank can supply emergency power for a one-time unlock.
A Note on Privacy
All of your fingerprint and app data is stored locally on the lock instead of being uploaded to the cloud.
Keep Your Smart Door Knob Running Smoothly
Keep a clean, dry finger on the center of the sensor, replace the battery when you hear seven beeps, and check Bluetooth and nearby paired devices if the app won't connect. With these steps, your EMBENLY smart door knob is easy to get back on track.
