Reviews

Avantek DB-21 review: A wireless, plug-and-play doorbell, no frills included

No camera here, but ultra-long range and ultra-loud chimes set this budget-priced option apart from the pack.
avantek wireless doorbell
Avantek

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Christopher Null is a veteran technology and business journalist. He contributes regularly to TechHive, PCWorld, and Wired, and operates the websites Drinkhacker and Film Racket. Disclosure: He also writes for Hewlett-Packad's marketing website TechBeacon.