Directory/Smart Locks/BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad, Smart Doorknob with Dual Cylinders for Exterior or Interior Door(Double Sided Fingerprint Matte Black)
BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad, Smart Doorknob with Dual Cylinders for Exterior or Interior Door(Double Sided Fingerprint Matte Black)
BOTHSTAR · Smart Locks

BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad, Smart Doorknob with Dual Cylinders for Exterior or Interior Door(Double Sided Fingerprint Matte Black)

5.8/ 10
Testwise score
Confidence: MEDIUM · scored on full spec sheet

"A rare double-sided smart lock for specific needs, built to a clear budget."

$159.99
at Amazon · price checked today
See it at Amazon →
The catch
It's marketed for security, but with a zinc body and no certified physical lock rating, it's a convenience product, not a high-security device.
The breakdown
4 axes, scored the same way across every smart locks we log.
Security Truth4.0
Reliability4.5
Battery & Ecosystem3.0
Price Honesty6.0
Spec, translated

The 'Double Sided Fingerprint Door Knob' requires a code or fingerprint to both enter and exit. This is for controlling traffic in both directions, not for a typical front door where you can freely exit from the inside.

Lab notes
The observations that actually change the buying decision.
01
Double-sided authentication is its sole reason for existence, serving niche cases like securing a room from both entry and exit.
02
The lock is offline; 'remote control' means generating temporary codes via phone app, not true Wi-Fi connectivity, contrary to some marketing keywords.
03
Construction is zinc alloy, not steel or brass. This is a standard cost-saving choice that compromises physical security against brute force attacks.
04
The complete absence of battery specifications (type, capacity, estimated life) is a significant omission for a battery-powered device sold on security.

Why you should buy

This is for someone securing an internal room, like a home office or inventory closet, where authentication is needed both ways. It also solves the problem of a two-way gate lock where convenience outweighs the need for maximum physical security.

Why you should skip

Anyone needing a primary security lock for a home's exterior door should seek an ANSI/BHMA graded product from an established brand. Users who want true remote control to lock/unlock via the internet will find this offline system doesn't meet their needs.

What buyers actually say
Themes pulled from real owner reviews, not marketing copy.

Pros

  • Offers keypad and fingerprint on both sides.
  • IPX6 rating makes it plausible for outdoor gates.
  • Offline code generation does not require Wi-Fi.
  • Includes physical keys as a mechanical backup.
  • Features a USB-C port for emergency power.

Cons

  • Misleadingly tagged with 'Wi-Fi' and 'Voice Control'.
  • Zinc alloy construction is less secure than steel.
  • Physical lock cylinder security grade is not specified.
  • Battery type and expected lifespan are not disclosed.
  • Long-term reliability from an unknown brand is a risk.
Full specifications
Source: manufacturer + retail catalog · synced today.
ShapeRound
Sold byPROYJ
CategoryTools & Home Improvement›Hardware›Door Hardware & Locks›Door Knobs
Lock typeCombination Lock, Key Lock, Keypad
BrandBOTHSTAR
ModelYJ42 LOCK
Style nameKnobs
Unit count1.0 Count
AvailabilityIn Stock
Finish typesMatte
ManufacturerBOTHSTAR
Material typeZinc
Shipping timeSunday, June 14
Control methodVoice
Item type nameLOCK
ShippingFREE
Controller typeHand Control, Mechanical knob
Dimensions8 x 4 x 4 inches
Number of pieces2
Shipping conditionSunday, June 14
Additional featuresDouble sided fingerprint, Double sided keypad
Included componentsKey
Connectivity protocolWi-Fi
Customer reviews stars3.93
More in smart locks
Scored on the same axes.
Keyless
Keyless Entry Door Lock with Built-in WiFi, Fingerprint Keypad Deadbolt, Door Locks for Front Door, No Hub Needed, App Control, ANSI/BHMA Grade 3, Auto-Locking, Easy Install, Matte Black
5.2$55.98
Ulecoce
Ulecoce Fingerprint Keypad Deadbolt with Handle Set, Keyless Entry Door Lock, App Control, Smart Door Locks for Front Door, Auto Lock＆One-Touch Lock, One-Time Code, 5 Key, Easy to Install
4.5$76.99
Populife
Populife Smart Fingerprint Lock Box for Keys with Code, Wireless Remote Access Key Lock Box for Outside, Digital Key Lockbox for Realtor Airbnb, Work Offline
6.7$119.99
5.8
BOTHSTAR BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad, Smart Doorknob with Dual Cylinders for Exterior or Interior Door(Double Sided Fingerprint Matte Black)PENDING · Smart Locks
$159.99See it at Amazon →