Wireless Digital Thermometer

The Wireless Digital Thermometer consists of a submersible sensor transmitter unit placed inside the aquarium and a receiver display unit that can be positioned anywhere within 30 metres — on a desk, wall, or across a fish room. Temperature data is transmitted via radio frequency at regular intervals, typically every 30–60 seconds.

The receiver display shows current temperature alongside minimum and maximum records, enabling detection of overnight heater cycling anomalies without installing additional monitoring hardware. Some models support multiple transmitter channels, allowing one receiver to monitor two or more tanks simultaneously.

The sensor transmitter is waterproof and attaches to the aquarium glass via suction cup. Batteries in both the transmitter and receiver are typically replaceable CR2032 or AA cells providing 12–18 months of continuous operation.