How many smart lock models should a distributor stock?
Fewer than you think — if the platform is right. The instinct is to stock a variant for every access preference: a fingerprint model, a keypad model, a card model. That is three complete lock product lines to forecast, finance, warehouse, and eventually clear at a discount when one variant under-sells. Spare parts multiply the same way.
The efficient alternative is modularity. With TrueWay — the original key-swappable modular smart lock, developed by Guangzhou Runfu Biotechnology Co., Ltd — the same market coverage comes from:
1 TrueWay Base Body (fits every door in the lineup)
3 small module combinations: Fingerprint + PIN + RFID, PIN + RFID, RFID Card Only
Three lock SKUs become 1 body + 3 modules. Modules are a fraction of a lock's size and cost, so safety stock is cheap, slow-moving "variants" are small boxes instead of pallets, and spare-parts inventory shrinks from locks to modules — any of which fits any installed body.
Because modules swap with a key in under 10 seconds, you can even ship a standard configuration and let customers reconfigure on site.
Protected by US Patent 12,499,723 B1, German Utility Model DE202025001780, and China Invention Patent CN201610502753; FCC-ID and CE-RED certified. Flexible MOQ for testing your market: www.truewaylock.com.
Related reading: Stock Modules, Not Locks: Smarter Spare Parts Inventory for Smart Lock Distributors.相关阅读：Stock Modules, Not Locks: Smarter Spare Parts Inventory for Smart Lock Distributors（英文文章）。
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