Digital alarm clock TFA Boxx2 — black, lithium-ion battery, micro-USB, 138×72×52 mm

TFA Boxx2 is a compact digital alarm clock in a rectangular black housing measuring 138×72×52 mm. It runs on an integrated rechargeable lithium‑ion battery and is supplied with a micro‑USB cable for charging. Designed for bedside or desk use, the Boxx2 offers radio‑controlled timekeeping, two independent alarm times with per‑day activation, temperature and humidity indication, and an energy‑efficient LED backlight with automatic activation via a light sensor.

Advantages

The Boxx2 does not require disposable batteries: its rechargeable battery can be charged conveniently via micro‑USB from a laptop, power bank or USB charger, enabling economical and environmentally friendlier operation and flexible placement without a mains socket. The clock also supports two separate alarm times that can be switched on or off for each individual weekday, and a snooze function with selectable intervals (5, 10 or 15 minutes). Radio‑controlled reception of the DCF‑77 signal ensures accurate time and automatic updates.

Suitable for

• Bedroom bedside table — compact design and quiet operation
• Home office or desk — clear display of time, date and weekdays
• Travel or temporary set‑ups — rechargeable battery and USB charging
• Users needing precise timekeeping — DCF‑77 radio control
• Monitoring indoor climate — temperature and humidity display

Key specifications

• Housing colour: black; rectangular form factor
• Dimensions: 138 × 72 × 52 mm
• Power: integrated rechargeable lithium‑ion battery, charged via micro‑USB (cable included)
• Time synchronisation: radio‑controlled reception (DCF‑77) for automatic, second‑accurate time setting
• Alarms: two independent alarm times, selectable per weekday; snooze intervals: 5, 10 or 15 minutes
• Display options: time, date with optional year, calendar week or seconds; weekdays with highlighted current day
• Environmental sensors: indoor temperature and relative humidity indication
• Backlight: economical LED backlight with light sensor for automatic activation; manual on/off switch

How to use

Place the TFA Boxx2 on a bedside table or desk where the light sensor can detect ambient brightness for automatic backlight control. Connect the micro‑USB cable to a USB power source to charge the internal battery before first use. The radio‑controlled function will automatically set the current time after the clock receives the DCF‑77 signal; manual setting is not required. Use the controls to programme one or two alarm times and select on which weekdays each alarm should be active. Adjust the snooze duration to 5, 10 or 15 minutes if required. Choose the preferred display mode to show seconds, calendar week or year alongside the date.

Usage recommendations

For reliable radio reception, place the device away from strong sources of electromagnetic interference. Charge the battery regularly to maintain readiness for travel or power‑off situations. Keep the device on a stable surface at typical indoor room height to obtain representative temperature and humidity readings; avoid direct sunlight or heat sources that may skew measurements.