Aquarium Thermometers - 810-920 this aquarium thermometer sits outside the aquarium and the waterproof probe is placed inside the tank, indicating temperature over the range of -50 to +70°C/°F. The aquarium thermometer is backlit and incorporates a max/ min memory function and a Ø4 x 20mm probe with a suction pad and lead. Dimensions 15 x 52 x 73mm.

The 810-910 waterproof aquarium thermometer is immersed inside the tank and can be secured to the tank by a suction pad. The aquarium thermometer indicates temperature over the range of 0 to +40°C with a 0.1°C resolution. Dimensions 27 x 45 x 55mm.