SwitchBot’s robot hand to unlock your door gets a big upgrade

The new retrofit smart door lock from SwitchBot has a sleeker look than its predecessor. | Image: SwitchBot SwitchBot has launched a new version of its retrofit smart lock. The SwitchBot Lock Pro ($119.99) offers a few upgrades over the company’s first lock, the SwitchBot Lock, including an aluminum alloy body, a more secure installation, and a new quick key lock / unlock mechanism.The SwitchBot Lock Pro costs $119.99 (£139.99 / €139.99) — or $199.99 (£239.99 / &euro