6 Pack Mini Digital Thermometer Hygrometer

Six-pack monitoring for tight spaces

This six-pack of mini digital thermometer hygrometers fits into jars, guitar cases, fridge shelves and grow tents where larger gauges cannot go. Each unit measures 1.89 in by 1.13 in by 0.66 in and weighs just .22 pounds, so a dozen locations can be tracked without crowding. The LCD screen measures 1.4 in by .66 in and updates temperature and humidity every ten seconds. Batteries are included for immediate use.

Steady readings across wide extremes

The sensors hold a temperature range of -58 to 158 degrees_fahrenheit and a humidity range of 10 to 99 percent RH under continuous operation. Accuracy stays within ±2 degrees for temperature and ±5 percent RH for humidity throughout the full span. The ABS housing and LCD remain functional in the same -58 to 158 degree environment, so the devices do not drift when left in a freezer or a heated greenhouse for weeks. No calibration is required after the first power-up.

Battery-powered independence limits placement

Because each hygrometer runs on its own included alkaline cell, there is no wiring, gateway or wireless protocol to manage. The trade-off is that data must be read visually on the 35.7 mm by 16.8 mm LCD; no logging, alerts or remote access are built in. Users who need historical graphs, smartphone notifications or a single dashboard for all twelve units will need a separate monitoring system. The mini form factor also means the display cannot show trend arrows or dew-point calculations.