At first the speacial feature: This digital thermo-hygrometer has got an external sensor not only to measure the temperature outside, but also the humidity outside.
That is an innovation! One more device for climate control can be economized. The properties of this thermo-hygrometers are:
- Outdoor temperature and humidity by cable
- Room temperature and humidity indoor
- Maximum, minimum and current values
- For wall mounting or table standing
- 1.5V AAA battery included

Specification
Measuring range temperature: -10° to +60°C (14° to 140°F),
measuring range humidity: 10 - 99%

Precision temperature: +/- 0,8°C (+/- 1,4°F) from 10° to 30°, otherwise +/- 1°C (+/- 1,8°F)
precision humidity: +/- 3,5% from 30% bis 80%, otherwise +/- 5%

Cable length: ca. 1.5m
Battery: 1.5V AAA

A more detailed instruction will be delivered.