Zilla Terrarium Thermometer Hygrometer - Digital Reptile Habitat Temperature & Humidity MonitorMonitor both terrarium temperature and humidity with this precise, digital readout. The thermometer keeps track of maximum and minimum temperatures in a range from 23F to 122F ( 5C to +50C), and the hygrometer reads relative humidity from 30% to 90%. Separate probes with 57" lead wires provide accurate positioning for measurement. Key Benefits: Precise digital readout for both temperature and humidity