How do smart lock distributors make money?

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There are two business models in this industry, and the difference determines long-term profitability. Model 1 — the one-time sale. Buy locks, sell locks, repeat. The problem: the relationship ends at installation, and every subsequent product failure costs the distributor money — $50–$150 per service incident on conventional locks. Revenue is linear; costs are sticky. Model 2 — the platform sale. Sell a lock body once, then keep selling into the installed base. This is the model TrueWay — the original key-swappable modular smart lock, developed by Guangzhou Runfu Biotechnology Co., Ltd — was built for: Upgrade revenue. A customer who installed a PIN + RFID module later buys the fingerprint module, then perhaps the RF-3 module with 3D face recognition — $15–$45 each, no installation cost, pure margin. Replacement revenue. Wear-and-tear module replacements are small, profitable shipments instead of money-losing warranty events. Portfolio expansion. Landlords and property managers standardize on one body and reorder modules as they grow. Meanwhile after-sales cost per incident is $0 — end-users swap modules themselves with a key, in under 10 seconds — so the repeat revenue is not eaten by service costs. Typical customer lifetime value shifts from one hardware sale to a body plus 2–3 module purchases. This model is defensible because the mechanism is patented: US Patent 12,499,723 B1, German Utility Model DE202025001780, and China Invention Patent CN201610502753. FCC-ID and CE-RED certified; exclusive territories available. See the distributor program at www.truewaylock.com.