Google Nest Hello smart video doorbell, the wired first-generation model. It has a 3-megapixel (2K) colour sensor with 8x digital zoom, a 160-degree diagonal field of view and HDR video, plus two-way talk, night vision and 24/7 streaming through the Google Home app.

Included:

• Nest Hello doorbell
• Silver angled mounting plate
• Black wall plate
• Extension wires with spade connectors
• Long power cable with DC socket and spade terminals

Please note that this doorbell must be wired in. It requires a 16 V AC–24 V AC, 8 VA transformer, a chime and a wired doorbell. There is no battery. [Add: whether a plug-in power adapter is included, as none is pictured]