Can it be left unlocked for a period of time or is it always locked?

Hello, There is a feature within the app called passage mode. This feature will disable the auto-lock during a schedule and allow the lock to stay unlocked. Thank you for your question.

Does this operate at all if the wifi is down? i understand the app won't work in this situation but what about preprogrammed codes and fingerprints?

Hello, In this case, the lock can still be controlled by the app while in bluetooth range. All the pre-programmed codes and settings will still work. Thank you for your question.

Can you have the handle facing horizontally towards the left side?

Hello, The handle is reversible for both left and right handed doors. Thank you for your question.

What functionality do you lose when it gets too cold? In Minnesota it can get down to -20 which is well below the functional range.

Hello, All electronic may be lost in those temperatures as with most electronics. It is recommended that you carry the physical key in those instances. Thank you for your question.

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Keyless Entry Fingerprint Digital Smart Lock with Handle & Keypad: Electronic/Electric Lock with Code, App Control Biometric Deadbolt Door Knob for Front, Interior, Exterior & Bedroom Door (Silver)

Product ID: 402027502

Details

Brand
Dermum
Item dimensions L x W x H
7 x 3 x 1.12
Lock Type
Biometric Lock
Material
Zinc

📱Real-time app control & alerts

🔒5-in-1 keyless entry

🛡️Auto-lock & anti-theft alarms

€ 166.28

Duties & taxes included

In stock

Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Elevate your door game—secure, smart, and effortlessly stylish.

SEAMLESS VOICE INTEGRATION - Hands-free control with Alexa & Google Assistant—lock or unlock with a simple command.
EFFORTLESS DIY INSTALLATION - Fits most doors with just a screwdriver—upgrade your security in under 20 minutes.
ROBUST ANTI THEFT PROTECTION - Auto-locking, privacy mode, and alarms keep your home safe from unwanted intrusions.
ULTIMATE KEYLESS CONVENIENCE - Unlock via fingerprint, code, fob, app, or physical key—never fumble for keys again.
SMART SECURITY AT YOUR FINGERTIPS - Receive instant notifications and access logs remotely for total peace of mind.

The Dermum S1 Keyless Entry Smart Lock combines biometric fingerprint access, keypad code entry, and app control with robust security features like auto-lock and anti-theft alarms. Compatible with Alexa and Google Assistant, it offers 5-in-1 unlocking options and real-time monitoring via the Sifely app. Designed for easy installation on front, interior, or exterior doors, this weather-resistant zinc lock delivers modern convenience and peace of mind for homeowners and property managers alike.

Specifications

ASIN	B09P81M2YC
Additional Features	Fingerprint Recognition, Keyless Entry, Bluetooth App Control, Keypad Passcode Unlock, RFID Key Fob Access, Auto Lock, One Touch Lock, Anti Peeping Password, Backlit Keypad, Touchscreen, Privacy Mode, Anti Theft Alarm, Access Logs, Real Time Unlock Notifications, Temporary Access Codes, Mechanical Key Backup, Weather Resistant, Alexa and Google Assistant Compatible via Gateway, Easy DIY Installati…
Best Sellers Rank	#37,622 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #150 in Deadbolts
Brand Name	Dermum
Color	Silver
Connectivity Protocol	Wi-Fi
Control Method	App, Remote, Touch, Voice
Controller Type	Amazon Alexa, Android, Google Assistant, iOS, iPadOS
Customer Reviews	4.4 4.4 out of 5 stars (1,901)
Included Components	Mounting Plate, Rubber Gasket, Face Plate, Back Plate, Bolt Assembly, 2X Keys, 2X Key Cards
Item Dimensions	7 x 3 x 1.12 inches
Item Weight	3.6 pounds
Lock Type	Biometric, Combination Lock, Deadbolt, Keypad
Manufacturer	Dermum
Manufacturer Part Number	Dermum S1
Material Type	Zinc
Model Name	Dermum S
Model Number	Dermum S
Number of Items	1
Number of Packs	1
Number of Pieces	16
Recommended Uses For Product	Front Door, Home Entry, Bedroom, Interior Door, Exterior Door, Office, Apartment, Garage Entry, Airbnb, Vacation Rental, Rental Property, Guest Room, Family Access, Guest Access, Short Term Rental Management, Property Management, Employee Access Control, Shared Living Spaces
Shape	Oval
Style Name	Deadbolt, Keypad, Knob, Handle
UPC	745808798109
Unit Count	1 Count

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