{"product_id":"hkm-2888531-3d-face-recognition-smart-door-lock-with-4-5-inch-screen-camera-fingerprint-pin-card-app-and-key-entry","title":"HKM-2888531 3D Face Recognition Smart Door Lock with 4.5 Inch Screen, Camera, Fingerprint, PIN, Card, App and Key Entry","description":"\u003cstyle\u003e\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@400;500;700\u0026display=swap');\n.hkm-pdp{\n  --hkm-ink:#0e0e0e; --hkm-body:#636363; --hkm-muted:#6e6e6e; --hkm-line:#e1e1e1;\n  --hkm-panel:#f0f0f0; --hkm-blue:#0672cb; --hkm-link:#00468b;\n  max-width:1292px; width:100%; min-width:0; margin:0 auto; padding:0 2px;\n  font-family:\"Roboto\",\"Helvetica Neue\",Helvetica,Arial,sans-serif;\n  font-size:16px; line-height:1.7; color:var(--hkm-body); font-weight:400;\n  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-wrap:break-word;\n}\n.hkm-pdp *{box-sizing:border-box}\n.hkm-pdp .hkm-eyebrow{\n  font-size:11px; font-weight:400; letter-spacing:.08em; 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Six ways open the door — 3D face, fingerprint, PIN code, IC card, the mobile app and a mechanical key — while a 5200 mAh battery, a Grade C cylinder and a 6068 stainless steel lock body sit behind the panels. It ships in Black or Gold, both with the same hardware inside.\u003c\/p\u003e\n\n\u003cp\u003eThink about the moment your hands are full: bags in one hand, a child in the other, no free finger for a keypad. The face sensor reads a standing person from about 100 cm to 200 cm of height and the door unlocks in roughly half a second, at night, in glasses, under a hat. When nobody is home the same camera answers a doorbell press and pushes the picture to the phone, where the visitor can be seen, spoken to and let in. That is the working range the HKM-2888531 covers.\u003c\/p\u003e\n\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e3D face recognition with infrared fill light, works in low light and at night\u003c\/li\u003e\n  \u003cli\u003e4.5-inch colour screen on the indoor panel for real-time visitor view\u003c\/li\u003e\n  \u003cli\u003eSix entry modes: 3D face, fingerprint, PIN code, IC card, app, mechanical key\u003c\/li\u003e\n  \u003cli\u003e5200 mAh battery, Grade C cylinder and 6068 stainless steel mortise\u003c\/li\u003e\n  \u003cli\u003eApp control for remote unlock, temporary passwords and unlock history\u003c\/li\u003e\n  \u003cli\u003eTwo finishes in the range: Black and Gold, identical configuration across both\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMaterials and Construction\u003c\/h2\u003e\n\u003cp\u003eThe outdoor panel is a single aluminium-alloy plate with an electroplated finish, tested for 120 hours of salt spray so the surface resists oxidation and keeps its colour under daily handling. A 3D face module sits at the top of the panel behind a dark window, with three infrared emitters and a camera lens grouped above a circular fingerprint ring. Below the ring sits a twelve-key backlit keypad with a card reader zone, and at the bottom a covered mechanical key cylinder that only shows itself when the cover is lifted.\u003c\/p\u003e\n\u003cp\u003eThe indoor panel carries the 4.5-inch colour screen at the top, a row of three control buttons directly beneath it, a battery compartment behind a magnetic cover in the middle, and two thumb-turn knobs at the bottom — the upper knob throws the deadbolt, the lower one releases the latch. Both panels share the same aluminium-alloy base material, and the two colourways differ only in plating, not in hardware.\u003c\/p\u003e\n\u003cp\u003eBehind the panels sits a 6068 stainless steel mortise, the standard body format used across entry doors, with a Grade C lock cylinder. The cylinder grade refers to the resistance class of the mechanical core: it is the part that a physical attack would target, and it is deliberately separated from the electronic layer so that a lost battery never means a lost door.\u003c\/p\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eFace recognition runs on a structured-light 3D module rather than a flat camera. The module projects an infrared pattern, measures depth across the face and compares the result with the stored template, which is why a photograph held up to the lens does not pass. Recognition is quoted at roughly 0.5 seconds and an error rate of 0.001% by the module supplier, and the sensor covers a standing height band of 100 cm to 200 cm, so children and tall adults both fall inside the frame without crouching or stretching. Infrared fill light keeps the same performance at night and in a dim hallway.\u003c\/p\u003e\n\u003cp\u003eThe fingerprint reader is a semiconductor sensor with a 160 × 160 sensing area, positioned as a ring around the button so that a thumb lands on it naturally when the hand grips the handle. PIN entry accepts 6 to 20 digits and supports a virtual or dummy password: a longer string can be typed around the real code, and the door still opens as long as the true digits appear in order somewhere inside it. That defeats a shoulder-surfer reading the keypad from a distance.\u003c\/p\u003e\n\u003cp\u003eIC cards are encrypted, so a copied card number alone will not open the lock. The mechanical key is the offline path and works with the electronics completely dead. The app layer adds remote unlock, temporary passwords with a time window for guests or cleaners, an unlock history with timestamps, and live indoor monitoring from the camera. Auto-locking can be switched on so the deadbolt throws itself once the door closes, and the camera can be set to capture a still each time someone stands at the door.\u003c\/p\u003e\n\u003cp\u003eOne detail worth knowing: the lock is built to resist the electromagnetic attack sometimes called a black-box test, where a coil is held against the panel to force a release. The housing and circuit layout are shielded against it, which is why the product is described as explosion-proof in supplier material.\u003c\/p\u003e\n\n\u003ch2\u003ePlacement and Use\u003c\/h2\u003e\n\u003cp\u003eThe HKM-2888531 fits wood, steel, stainless steel, aluminium and brass entry doors — the five door materials that cover almost every home, apartment and small office door. Because the body is a 6068 format, it drops into doors already cut for that mortise pattern, which keeps installation to a swap rather than a rebuild. The outdoor panel faces the weather and the indoor panel faces the room, and the two are linked only by the body inside the door.\u003c\/p\u003e\n\u003cp\u003eTypical settings are a main entrance, a rental unit where the tenant changes and the temporary password is reset instead of the lock, a home office that needs an unlock trail, and a second door where family members come and go with their hands full. In a rental the app matters as much as the hardware: a new temporary code can be issued from another city without anyone travelling to the door.\u003c\/p\u003e\n\u003cp\u003eInside the house the indoor screen doubles as a viewer. A doorbell press wakes the panel, the visitor appears on the 4.5-inch display, and the three buttons under the screen handle answer, hang up and playback. Nobody has to reach for a phone to see who is outside.\u003c\/p\u003e\n\n\u003ch2\u003eIncluded and Optional\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOutdoor panel\u003c\/td\u003e\n\u003ctd\u003eAluminium-alloy face plate with 3D face module, fingerprint ring, backlit keypad, card reader and covered key cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIndoor panel\u003c\/td\u003e\n\u003ctd\u003e4.5-inch colour screen, control buttons, battery compartment and two thumb-turn knobs\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHardware pack\u003c\/td\u003e\n\u003ctd\u003e6068 stainless steel mortise, mechanical keys, IC cards, mounting screws and fitting template\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe two panels are matched as a pair — the outdoor unit carries the camera and the reader, the indoor unit carries the screen and the battery, and both must be installed for the video and face functions to work. Cards and keys are consumables in daily use, so keeping a spare card in a drawer and a key outside the house is worth planning at installation.\u003c\/p\u003e\n\n\u003ch2\u003eColours and Finishes\u003c\/h2\u003e\n\u003cp\u003eTwo finishes are offered. Black is a deep graphite plating that reads almost matte in daylight and blends into a dark door; Gold is a warm champagne tone that stands out against white and wood-grain doors. Both use the same electroplated process and the same 120-hour salt spray standard, so the choice is purely visual — the panels, sensor layout and lock body are identical between them.\u003c\/p\u003e\n\u003cp\u003eOn a black steel door the Black version all but disappears, which suits a minimal entrance. On a light oak or white door the Gold version gives the hardware a deliberate presence. Because the finish is plated rather than painted, cleaning with a dry or slightly damp cloth is enough; abrasive pads and solvent sprays are what dull a plated surface over time.\u003c\/p\u003e\n\n\u003ch2\u003eCare and Maintenance\u003c\/h2\u003e\n\u003cp\u003eWipe the panels with a dry microfibre cloth. For fingerprints on the keypad or the screen, a cloth barely dampened with water is enough — alcohol, acetone and household glass cleaners can cloud the plated surface and the screen coating. Keep the fingerprint ring dry; a wet thumb reads poorly and leaves residue in the sensing area.\u003c\/p\u003e\n\u003cp\u003eClean the camera window and the infrared emitters at the top of the outdoor panel the same way. Dust on that window is the usual cause of slow face recognition, and it is a two-second fix. Check the battery level in the app rather than waiting for the low-battery warning, and keep the mechanical key somewhere outside the house — a key locked inside is the one failure mode a smart lock cannot solve for you.\u003c\/p\u003e\n\u003cp\u003eTwice a year, open and close the door with the mechanical key to keep the cylinder free, and check that the mortise bolts move without resistance. If the door has swollen with the season and the bolt drags, adjust the strike plate rather than forcing the motor, since a binding bolt is what wears a motorised body out early.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHKM-2888531\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCategory\u003c\/td\u003e\n\u003ctd\u003eSmart Locks\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAccess Modes\u003c\/td\u003e\n\u003ctd\u003e3D face, fingerprint, PIN code, IC card, app, mechanical key\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e4.5-inch colour screen on the indoor panel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e5200 mAh rechargeable pack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSecurity\u003c\/td\u003e\n\u003ctd\u003eGrade C cylinder, 6068 stainless steel mortise\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminium alloy panels, electroplated finish, 120-hour salt spray\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDoor Compatibility\u003c\/td\u003e\n\u003ctd\u003eWood, steel, stainless steel, aluminium and brass doors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hkm-q\"\u003e\n  \u003ch3\u003eWhich doors does the HKM-2888531 fit?\u003c\/h3\u003e\n  \u003cp\u003eWood, steel, stainless steel, aluminium and brass entry doors. The lock body is the 6068 stainless steel format, so a door already cut for that mortise can usually take the lock as a straight swap. Measure the door thickness and compare the existing cutout with the fitting template before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-q\"\u003e\n  \u003ch3\u003eHow does the 3D face recognition work?\u003c\/h3\u003e\n  \u003cp\u003eAn infrared structured-light module maps depth across the face instead of comparing a flat photo, so a printed picture or a phone screen will not unlock it. The sensor reads a standing person across a height band of roughly 100 cm to 200 cm and unlocks in about half a second, and infrared fill light keeps it working at night, in glasses and under a hat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-q\"\u003e\n  \u003ch3\u003eHow many ways can the door be opened?\u003c\/h3\u003e\n  \u003cp\u003eSix: 3D face, fingerprint, PIN code, IC card, the mobile app and the mechanical key. Face, fingerprint, PIN and card are set per user in the app, temporary passwords can be issued with a time window, and the mechanical key works with the electronics completely off.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-q\"\u003e\n  \u003ch3\u003eWhat happens if the battery dies or the Wi-Fi drops?\u003c\/h3\u003e\n  \u003cp\u003eThe mechanical key still opens the door with no power at all, and the indoor thumb-turn releases the latch from inside. Losing Wi-Fi only removes remote unlock, temporary passwords issued from elsewhere and live viewing; face, fingerprint, PIN and card all run on the lock itself and keep working.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-q\"\u003e\n  \u003ch3\u003eHow often does the 5200 mAh battery need charging?\u003c\/h3\u003e\n  \u003cp\u003eRuntime depends on how often the screen and camera wake, so the honest answer is to watch the level in the app rather than a fixed calendar. The app shows battery percentage, and the panel gives a low-battery warning well before the cell is flat, which leaves time to charge before the key becomes the only option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-q\"\u003e\n  \u003ch3\u003eWhat is the indoor screen for?\u003c\/h3\u003e\n  \u003cp\u003eIt shows the camera feed in real time, so a doorbell press or a person standing outside appears on the 4.5-inch panel without anyone opening the door or reaching for a phone. The three buttons under the screen handle answer, hang up and playback of stored captures.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eShipping, Returns and Warranty\u003c\/h2\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003eFree Shipping on All Orders\u003c\/h3\u003e\n\u003cp\u003eHandling Time: 0-1 business days (Monday to Friday). Transit Time: 2-5 business days (Monday to Friday). Every order ships free and a tracking number is emailed as soon as the parcel leaves our warehouse.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003e180 Days Purchase Protection\u003c\/h3\u003e\n\u003cp\u003eYour purchase is protected for 180 days from the delivery date against manufacturing defects and damage in transit. If something arrives wrong, we make it right.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003e30 Days Money-Back Guarantee\u003c\/h3\u003e\n\u003cp\u003eNot completely satisfied? Request a return within 30 days of delivery for a full refund. We keep the process simple and hassle-free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hkm-policy-card\"\u003e\n\u003ch3\u003e24 Months Warranty Service\u003c\/h3\u003e\n\u003cp\u003eThe product is covered by a 24-month warranty from the delivery date against manufacturing defects. Coverage includes parts and labour; normal-wear items are excluded.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"hkm-close\"\u003eHKM-2888531 — aluminium-alloy smart door lock with a 3D face module and infrared night vision, a 1.2-megapixel camera feeding a 4.5-inch indoor screen, six ways to open the door across face, fingerprint, PIN, IC card, app and key, a 5200 mAh battery, a Grade C cylinder and a 6068 stainless steel mortise, offered in Black and Gold. Read the manual before first use. Nothing here is safety certification advice.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Hekomart","offers":[{"title":"Black","offer_id":67934791204947,"sku":"HKM-2888531-BLACK","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Gold","offer_id":67934791237715,"sku":"HKM-2888531-GOLD","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0624\/6170\/6323\/files\/H9c12ccf96f034cf3ba7c8176cfd7294eP.webp?v=1793077983","url":"https:\/\/www.hekomart.com\/products\/hkm-2888531-3d-face-recognition-smart-door-lock-with-4-5-inch-screen-camera-fingerprint-pin-card-app-and-key-entry","provider":"Hekomart.com","version":"1.0","type":"link"}