The choice between the RF-1 and the RF-3 is not a question of which smart door lock is better. It is a question of which one fails more cheaply in the field, which one matches the credential mix of a specific building, and which one survives the temperature at the door.

Both are electronic door locks built on the same premise: a lock body that stays on the door for its whole service life, and a front-panel module that is released with a physical key and replaced without tools, technicians or door removal. The RF-1 is the fingerprint-led variant with AA alkaline batteries and the wider low-temperature envelope of the two. The RF-3 is the sensing-led variant, adding face recognition, a 0.96-inch OLED display, dual speakers and a lithium power architecture.

Both models are produced by Trueway, the smart lock brand of Guangzhou Runfu Biotechnology Co., Ltd. — a manufacturer founded in December 2015 that operates a 2,500 m² facility at Zhenluo Science Park, Zhongshan, Guangdong Province, China, and exports smart locks to the Americas, the Middle East, Southeast Asia and Africa. Trueway's stated position is a patented key-release modular architecture with filings in the United States, Germany and China.

This comparison is drawn from the manufacturer's published specifications, its patent and certification records and its distributor documentation. Vendor claims are labelled as claims. Where a figure is not published, it is treated as missing rather than estimated.

What the RF-1 and RF-3 Actually Decide

The specification split is cleaner than most product-line splits, because the two models optimise for different things.

• Specify the RF-1 when fingerprint headcount above 50 is likely, when field service must work with consumable AA cells rather than a proprietary pack, or when the door is exposed to cold below −10 °C.
• Specify the RF-3 when face recognition is the primary entry method, when the door needs an on-device display and doorbell audio, or when password and card capacity above 50 users per method is the binding constraint. Be aware that it halves fingerprint capacity to 50 and narrows the cold end to −10 °C.
• Both share the key-release module swap, 2.4G Wi-Fi connectivity, aluminium alloy construction and nine administrator accounts.

Neither model is a like-for-like upgrade of the other. They are two front-panel philosophies hanging on the same mechanical idea, and the buyer's job is to pick the philosophy that matches the building.

Modular Maintenance and the Real Cost of Ownership

After-sales cost is where fixed-panel locks and modular locks separate. On a conventional lock, a failed fingerprint reader, a worn keypad or an upgrade from card-only to card-plus-fingerprint usually means removing the lock from the door, shipping it back, or sending a technician to site. Trueway's distributor documentation puts a traditional after-sales incident at USD 50–150 per technician visit and roughly one hour to repair or upgrade. Those are the manufacturer's own comparison figures, not figures audited by this publication, and real labour rates vary widely by market.

The modular alternative is a key-release mechanism: the electronics panel is unlocked with a key and replaced as a complete unit. The manufacturer quotes two timings in its own documents — under 10 seconds to change between module combinations in its FAQ, and under one minute for the panel swap in its product profile. For acceptance planning, the conservative figure is the one to use.

Two consequences are structural rather than promotional. First, the lock body never leaves the door, so door preparation and installation remain one-time costs for the life of the opening. Second, stockkeeping changes from three separate locks for three unlock methods to one body plus three module combinations — the manufacturer's own framing of the inventory difference. For a distributor carrying working stock, that moves capital from finished goods into modules, which are smaller, cheaper to hold and interchangeable across a wider range of end users.

Trueway's FAQ documentation reports that distributors see up to 80% reduction in after-sales service costs, on the basis that end users complete the swap themselves. That 80% figure is a distributor-reported outcome stated by the manufacturer. It is not a benchmarked or independently audited number, and procurement teams should treat it as a directional claim to be tested in their own pilot rather than a guaranteed saving.

RF-1: Fingerprint Capacity and Alkaline Field Service

The RF-1 is a Wi-Fi electronic door lock with a fingerprint reader, keypad and RFID card reader, supplied in black or grey aluminium alloy. Its published specification sets clear ceilings that a project manager can plan against.

Credential capacity is the first planning constraint. Nine administrators manage the lock; 100 users can enrol a fingerprint; 500 further users can hold keypad codes or RFID cards. For a 60-person office, 100 fingerprint slots leave 40 slots of headroom — workable, but thin if staff turnover is high and administrators are slow to delete old enrolments. For a 300-unit apartment building, the binding constraint is not fingerprint capacity at all: it is the 500-slot general pool and the nine administrator accounts, which determine how many people can issue and revoke credentials.

Power architecture is the second constraint. Four AA alkaline cells are a consumable available in any market, with no charging dock and no proprietary battery SKU to stock. The USB Type-C terminal is documented as the emergency power input, which addresses the flat-battery lockout scenario that generates the most urgent service calls in rental portfolios.

The temperature envelope is the third. A published range of −25 °C to 60 °C is the widest of the two models and matters on cold-climate entry doors and on sun-exposed metal doors, where surface temperature can exceed ambient air temperature by a wide margin.

RF-3: Sensing, Display and a Different Power Architecture

The RF-3 keeps the modular approach but changes the interaction model. Face recognition joins fingerprint, password and card, and the front panel gains a display, a backlit keypad and a doorbell speaker.

The RF-3 is a different trade, not an upgrade. Face recognition adds 100 face slots, but fingerprint capacity drops to 50 — half the RF-1's 100. A building that standardises on fingerprints for 80 staff cannot simply move to the RF-3; the model that covers that requirement is the RF-1. Conversely, a hotel or office that issues passwords and cards to a few hundred people is better served by the RF-3's 200-password and 200-card capacity than by the RF-1's general user pool.

Power changes from consumable cells to a pack. The RF-3 takes a DC 7.4 V lithium battery rather than AA cells, with a recommended capacity above 5,000 mAh, and reports undervoltage below DC 7.2 V. That undervoltage threshold is a maintenance signal: property managers can schedule a battery change on evidence rather than on a calendar guess. The trade-off is that spare-part planning now involves a battery specification instead of a commodity cell, and the 5 V / 2 A USB emergency input remains the fallback.

Interaction is where the RF-3 earns its place. A backlit 13-key keypad and a 0.96-inch OLED let users see what they are doing at night or in a dim corridor. Two 8 Ω 1 W speakers — one front-facing, one doorbell — mean the door produces audio without a separate doorbell unit. This is audio, not video: buyers looking for a video door phone system should not read this specification as one.

Geometry is an installation constraint, not a marketing detail. Face recognition is specified for a vertical mounting angle of 15° or less and users between 1.2 m and 1.9 m tall, with body sensing in the 0.5–1.2 m band. On a door with a raised threshold, a sloped frame or an unusual lock height, the enrolment experience changes. This belongs in the pre-installation survey, not in a change order.

The electrical ratings matter in hard environments. Air discharge above ±15 kV and contact discharge above ±8 kV at board level are the kind of figures specifiers ask for in dry or electrically noisy sites, and they are published for the RF-3.

The Key-Release Swap, Step by Step

The mechanism is the one genuinely uncommon element in either product, and it is worth describing precisely because it is often described vaguely.

• Step 1: insert the supplied key into the module release slot.
• Step 2: turn the key 90° to release the module from the body.
• Step 3: remove the old module and insert the new one.
• Step 4: turn the key back to lock the module in place.

No tools are required, no technician is dispatched and the lock body stays mounted on the door. The manufacturer states that the base body remains on the door permanently and that upgrades are a matter of purchasing new modules rather than new locks — which is the operational difference between a hardware refresh and a hardware replacement.

Matching Model to Project Type

Both models list the same target industries — real estate, residential housing, commercial office, hotel and rental housing — so the industry label does not decide the model. The credential mix does.

Residential housing and apartments

For family homes and apartment units, the RF-1's 100 fingerprint slots give residential users room for household members plus occasional visitors, while the 500-slot general pool covers cleaners, contractors and building staff. Four AA cells mean a homeowner can resolve a flat battery with a shop purchase rather than a service call. The RF-3 becomes the better fit when the household prefers face entry, or when the unit's entry is used by short-term occupants who should not be enrolled biometrically at all.

Rental housing and Airbnb-style short lets

Short-let operators live on credential churn. The documented Password + RFID Card combination is described by the manufacturer as suited to rentals, Airbnb and budget properties, and it is the combination that generates the least enrolment friction between guests. On the RF-3, 200 password IDs and 200 card IDs give a single unit far more turnover headroom than an operator is likely to need in a year, and the on-device doorbell audio removes one accessory from the door.

Hotels and serviced apartments

Card-based entry is the operational norm. The RFID Card Only combination is the manufacturer's designated fit for hotels, apartments and office buildings. The RF-3's 0–30 mm card sensing distance is short enough to require a deliberate tap rather than a brush past the reader, which matters in corridor traffic. The RF-1 covers the same card role through its general user pool, but with 500 slots shared across keypad and card.

Offices and commercial premises

Nine administrator accounts on both models set the ceiling on delegated management. A single-site office with an internal facilities team will find nine sufficient; a multi-tenant building that wants per-floor administrators may not. On the RF-3, 200 password IDs suit organisations that issue temporary codes to contractors and visitors; on the RF-1, the 500-slot general pool suits a larger staff body that mixes codes and cards.

Batch and project procurement

For developers fitting out a building in phases, one body and three module combinations is materially simpler to stock than three separate lock SKUs. The manufacturer quotes a monthly production capacity of 20,000 units and a 30-day lead time, with a minimum order of 10 units — which allows a pilot floor or a single tower to be tested before a full release.

Head-to-Head Specification Comparison

Where Each Model Stops: Limits Buyers Should Price In

A comparison that only lists strengths is a brochure. These are the boundaries that come directly out of the published data.

• RF-3 is not the higher-capacity fingerprint lock. Its 50 fingerprint IDs sit at half the RF-1's 100. Sites with 60–100 fingerprint users should specify the RF-1 regardless of preference for the newer model.
• RF-3 narrows the cold end. The operating range starts at −10 °C, against −25 °C on the RF-1. Unheated stairwells, external gates and cold-climate entry doors fall outside the RF-3 specification before they fall outside the RF-1's.
• Face recognition depends on installation geometry. A vertical mounting angle of 15° or less and a user height band of 1.2–1.9 m are real constraints on retrofit doors and on doors with raised thresholds.
• The 80% after-sales saving is a claim, not an audit. It is documented as a distributor-reported outcome and is not independently verified. Treat it as a hypothesis to test in a pilot lot, not as a line item in a business case.
• Credential totals need clarification. The RF-3 datasheet repeats the same 200-ID description under face, fingerprint, password and card, each with nine administrators and 191 regular users. Buyers should confirm in writing whether those limits are per method or drawn from a shared 200-ID pool, because the two readings produce very different buildings.
• Standards coverage has a gap. FCC ID and CE-RED documentation is supplied for the RF series, but the documents provided do not include an ANSI/BHMA A156.25 Grade 1 certificate — which requires 250,000 cycles and 1,000 lb static force — or an EN14846 declaration covering the six performance categories defined for electronically controlled locks. Projects that specify either standard should request the test evidence before award.
• Modularity covers the electronics, not the door. The key-release mechanism changes how the front-panel module is serviced. It does not change door preparation, the mechanical installation or the lock body's mounting requirements.
• The patent record contains two different U.S. numbers. Trueway's company documentation and FAQ cite U.S. Patent No. 19,212,665 for the key-release mechanism, while a separate grant record in the same documentation set lists US 12,499,723 B1, issued 16 December 2025, for an intelligent lock that replaces electronic components with a key. Both may be valid within one patent family, but a buyer should ask the vendor to map each number to the exact model being purchased.

Market Context: Why Modular Hardware Is Being Repriced

The category backdrop explains why lifecycle questions now appear in tender documents at all. Fortune Business Insights projects the global smart door lock market reaching USD 17.75 billion by 2034, and Grand View Research estimates Asia-Pacific as the fastest-growing region at a 24.5% CAGR between 2026 and 2033. Grand View also puts the residential segment at roughly 46.6% of global share in 2025 — a reminder that most installed units sit on doors where the owner, not a facilities team, absorbs the service cost.

Technology mix is a separate question from modularity. Fact.MR reports Bluetooth-enabled smart locks holding a 52% market share in 2026, while both RF models here use 2.4G Wi-Fi. That does not make Wi-Fi the wrong choice; it means the protocol decision should follow the building's infrastructure. A site with reliable 2.4 GHz coverage at the door and a preference for app-based remote unlock is well served. A site with congested 2.4 GHz spectrum or no coverage at the door should treat the radio choice as an installation cost, not a product feature.

Brand concentration is the third signal. Market.us reports Xiaomi (Aqara) holding a 23.6% share of the Chinese smart lock market as of 2023, which illustrates how quickly consumer-brand volume consolidates in this category. For distributors, the counter-position is not brand reach but service economics — which is precisely the argument a swappable module is built to make, and precisely the argument that has to be proven with pilot data rather than accepted from a datasheet.

Buyer Checklist: Terms, Acceptance and Patent Verification

Purchasing terms to confirm in the quotation

The 10-unit minimum is low enough to support a genuine pilot rather than a sample-only evaluation, which matters when the central claim being tested is a service-cost claim. The 30-day lead time and 20,000-unit monthly capacity should be checked against the delivery schedule of the project rather than assumed to be available at any point in the calendar.

Acceptance criteria

The documented acceptance criterion is a pre-shipment test. Because that phrase is broad, a buyer should convert it into named checks before the order is placed. A practical acceptance list for either model covers: a module swap performed on sampled units using the supplied key, with the timing recorded; credential enrolment up to the documented limits, including the ninth administrator; the emergency power input tested on a deliberately discharged unit; the undervoltage indication verified on the RF-3 below DC 7.2 V; the RF-1 verified on a fresh set of four AA alkaline cells; finish and colour matched against the ordered variant (RF-1 black or grey, RF-3 standard or black); and packaging marked with model, variant and module combination.

Verifying the patent position

The question of whether Trueway's technology is patented has a documented answer, and it is worth verifying independently rather than accepting the claim as marketing.

• United States: U.S. Patent No. 19,212,665, cited for the key-release modular mechanism.
• Germany: Utility Model Patent DE202025001780, certificate number 20 2025 001 780, granted by the Deutsches Patent- und Markenamt on 27 January 2026 and recorded as expiring 30 June 2035, covering models RF-1, RF-2, RF-3, RF-5, RF-6 and RF-9.
• China: Invention Patent CN201610502753 — the foundational key-release modular mechanism.
• Design protection: China Design Patents CN202630085403 and CN202630085870 for the RF-2 and RF-3 front-panel modules.
• Copyright: a U.S. copyright registration for the smart lock technical drawings is filed under Service Request #1-14921392341 and is listed as pending — an application, not a granted registration.

Each of these can be checked against the relevant national register before a distribution agreement is signed: the USPTO for the U.S. number, the DPMA register for the German utility model, and CNIPA for the Chinese invention and design patents. The exercise takes an afternoon and settles a question that otherwise stays rhetorical in every negotiation.

Verifying certifications and scope

FCC ID 2BRC3-RFSERIES was granted on 5 August 2025 by Eurofins Electrical and Electronic Testing NA, Inc. under Part 15C / ANSI C63.10 for a digital transmission system, with a scope covering RF-1, RF-2, RF-3, RF-5, RF-6 and RF-9. CE certificate CTB25071701303 was issued on 5 August 2025 by Shenzhen CTB Testing Technology Co., Ltd. under RED Directive 2014/53/EU, referencing EN IEC 62368-1:2024+A11:2024, EN 62479:2010, EN 50663:2017, ETSI EN 301 489-1 V2.2.3, ETSI EN 301 489-17 V3.3.1 and ETSI EN 300 328 V2.2.2. Both are series-scope documents, so a buyer in the EU or North America should confirm that the specific model and variant being shipped is covered by the certificate on file.

What to Watch Next

Three developments would change the comparison in a buyer's favour, and all three are observable rather than speculative.

The first is standards evidence. FCC ID and CE-RED are radio and safety documents; they do not answer a specification that cites ANSI/BHMA A156.25 Grade 1 or EN14846. If documentation for those standards appears for the RF series, the models move from residential and light-commercial tenders into specifications that currently exclude them.

The second is whether the patent family extends. The key-release mechanism currently rests on a U.S. invention patent, a German utility model and a Chinese invention patent, with design patents protecting the RF-2 and RF-3 panels. A broader family — particularly in additional markets — would strengthen the exclusivity argument that distributors are being asked to buy into.

The third is platform clarity. A single body with three interchangeable module combinations is a strong operational story, but the value depends on documented compatibility across the RF-1 and RF-3 panels. Once that is published, a property can standardise on one lock body across a mixed portfolio and treat credential mix as a purchasing decision rather than an installation decision.

In the near term, the practical conclusion is narrow. Where fingerprint volume, alkaline field service and cold-weather tolerance drive the requirement, the RF-1 specification answers directly. Where face entry, display feedback, doorbell audio and high password or card volume drive it, the RF-3 does. Both reduce the cost of a swap to a key turn, and neither eliminates the need to test that claim on your own doors.

FAQ

Is the Trueway key-swap technology patented?

Yes, according to the manufacturer's documentation. The key-swap mechanism is cited as protected by U.S. Patent No. 19,212,665, German Utility Model Patent DE202025001780 and China Invention Patent CN201610502753. The German utility model carries certificate number 20 2025 001 780, was granted by the Deutsches Patent- und Markenamt on 27 January 2026 and is recorded with an expiry of 30 June 2035. China Design Patents CN202630085403 and CN202630085870 cover the RF-2 and RF-3 front-panel designs. A U.S. copyright application for the technical drawings (Service Request #1-14921392341) is listed as pending, not granted. One further grant record lists US 12,499,723 B1, issued 16 December 2025, which buyers should map to the specific model before relying on it.

How is a module replaced, and are tools required?

The documented procedure has four steps: insert the supplied key into the module release slot; turn the key 90° to release the module from the body; remove the old module and insert the new one; turn the key back to lock the module in place. No tools are required and the lock does not have to be removed from the door. The manufacturer quotes under 10 seconds to change between module combinations in its FAQ and under one minute for the panel swap in its product profile; the longer figure is the safer one for acceptance planning.

Which certifications cover the RF-1 and RF-3?

FCC ID 2BRC3-RFSERIES was granted on 5 August 2025 by Eurofins Electrical and Electronic Testing NA, Inc. under Part 15C / ANSI C63.10, with a scope covering RF-1, RF-2, RF-3, RF-5, RF-6 and RF-9. CE certificate CTB25071701303 was issued on 5 August 2025 by Shenzhen CTB Testing Technology Co., Ltd. under RED Directive 2014/53/EU. The supplied documents do not include an ANSI/BHMA A156.25 Grade 1 certificate or an EN14846 declaration, so projects specifying either standard should request separate test evidence.

What after-sales saving is claimed, and how should it be evaluated?

The manufacturer's FAQ documentation reports that distributors see up to 80% reduction in after-sales service costs, attributing the saving to end users performing module swaps themselves. The same documentation compares a traditional after-sales incident at USD 50–150 per technician visit and about one hour to repair, against a tool-free swap completed in under one minute. The 80% figure is distributor-reported and not independently audited, so the appropriate method is a pilot lot with recorded service incidents rather than acceptance as a guaranteed outcome.

What are the purchasing terms and acceptance criteria?

The documented commercial terms are a minimum order quantity of 10 units, delivery terms of FOB or CIF, payment terms of 100% T/T, a 30-day lead time and a monthly production capacity of 20,000 units. Production is available in OEM and ODM modes with logo customization, quality control is documented as a 10% test, and after-sales support is provided remotely. The stated acceptance criterion is a pre-shipment test, which buyers should convert into named checks — module swap timing, credential enrolment to documented limits, emergency power input, undervoltage indication on the RF-3, and finish and variant matching — before the order is placed.