Field notes from the door
Engineering, sourcing, installation and market notes — written for distributors and installers, not for search engines.
Why a lock needs an indoor screen at all
A camera on the outside of the door is only useful if someone can see the image. That is the whole argument for an…
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Sample kit: what to send and what to leave out
A sample kit is a sales argument you can hold. Sending the whole catalogue is a mistake; sending the right three models is a…
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Temporary codes: the feature that sells rentals
For a landlord, a lock is not a gadget. It is the end of meeting a tenant at 11 pm to hand over a…
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Service calls you can prevent with two photos
Most first-month service calls are not failures. They are misunderstandings that a photograph would have caught before shipment. Photo 1: the door edge Shows…
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Why 419 models is a service promise, not a catalogue
A big range is only useful if the parts behind it are organised. Otherwise it is a warehouse of orphans. One firmware family Every…
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The 72-hour gate: what happens before packing
Between the end of assembly and the sealing of the carton there is a sequence that decides how many units come back. Ageing Power-on…
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