Sunsun Wdj 004 Digital Thermometer W Wire Probe Sensor

SUNSUN WDJ-004 Digital Aquarium Thermometer (w/ Wire Probe/Sensor)
Features

Waterproof LCD Screen
Temperature range : -50°C ~+ 70°C
Dual reading: Celsius and Fahrenheit
Probe line size: 97 cm
Battery : 1.5V LR44 (not included)
Suitable for saltwater and freshwater aquariums
Size : 5.8 x 3.7 x 1.5 cm

SunSun WDJ-004 Digital Thermometer with Probe for Singapore Tanks

A reliable thermometer is one of the cheapest pieces of insurance you can add to a tank, and the WDJ-004 keeps the LCD display outside the water with a 97cm wired probe sitting inside. That separation makes it easy to read at a glance from across the room and keeps the electronics dry. The dual Celsius and Fahrenheit readout and wide range suit both freshwater and saltwater setups, so one unit covers most tanks you might run.

In Singapore, where many tanks run heaterless at 27-29C, a thermometer is how you catch the things that creep up on you: a tank slowly cooking near a sunny window, an air-conditioned room pulling temperature down at night, or a heater quietly sticking on. Tape the probe away from the heater outflow and any direct sunlight for a reading that reflects the bulk of the water, and check it during the warmest part of the day.

Find it in heating and cooling. For why temperature stability matters, see our temperature fluctuation guide and the best digital thermometer with probe comparison.