Turn off breaker (without clock attached), unscrew a wall plate for an outlet, unbend and drop paperclip in wall, below outlet, by sliding it between the electric box and the drywall, put wall plate back, turn breaker back on, put the kettle on for a tea.
Turn off breaker (without clock attached), unscrew a wall plate for an outlet, unbend and drop paperclip in wall, below outlet, by sliding it between the electric box and the drywall, put wall plate back, turn breaker back on, put the kettle on for a tea.
This is the best answer. Getting it in a wall void space should win.
Literally hiding it IN your house…