Testo™ 610 Compact Humidity/Temperature Meter with Backlit Display Temperature Range: –10 to 50°C Electronic Hygrometers | Fisher Scientific
Testo 610 Air Humidity and Temperature Meter | Humidity Meters | Instrumart
Original Testo 610 Temperature and Humidity Meter No. 0560 0610 Thermohygrometer - China Thermohygrometer, Testo610 Thermometer and Hygrometer | Made-in-China.com