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12. TECHNICAL CHARACTERISTICS
• CHRONO Dimensions (LxHxD): ..............................................................................................................142 x 103 x 31 (mm)
• Power Supply: ............................................................................................................................................. 2 x 1.5 V, AA batteries
• Functioning room temperature: .................................................................................................................................... 0 - +40°C
• Warehouse temperature: ..............................................................................................................................................-10 - +50°C
• Protection rating according to EN 60730: .................................................................................................................................. II
• Protection rating according to EN 60529: ............................................................................................................................ IP 20
• Connection technique: ...............................................................................................................................2 non-polarised wires
• Connection cable max. length: ....................................... 50 m (with cable of 2x0.75mm
2
) (0.5 ÷mm
2
min - 1.5 mm
2
max)
• Precision indication room temp.: ................................................................................................................... +/- 0.5°C at 25°C*
• NTC room temp. sensor: ............................................................................................................................................50 k at 25°C
• Clock indication diversion ........................................................................................................................... +/- 15 minutes/year
* = the indication of the room temperature can be aected by the point of installation of the CRONO 7 (e.g. hot wall, cold
wall, height from the ground, etc.).
12.1 Product specications.
In accordance with Regulation 811/2013 the temperature control device class is:
Class
Contribution to the environmental
heating seasonal energy eciency
Description
IV +2% Weekly digital chronothermostat
VII +3,5% Weekly digital chronothermostat coupled to outer sensor