Product SKU:DHTKW01016 Current Rating:16A Voltage:230VAC Frequency:50-60Hz Power Reserve:3 Years Power Consumption:1W LCD Display Mechanical life:10 to power of 6 Electrical life:10 to power of 5 Supply terminals:A1-A2 Supply voltage tolerance:+/-10 Percent Operating Modes:Manual,automatic,holiday,nightbreak Summer winter time:off, automatic changeover Rated insulation voltage:250V Wire size:1 mm2 - 4 mm2 Tightening torque:0.5Nm DIN Rail Mounting Dimension:90x36x65mm IEC 60730-1/IEC 60730-2-7 Standard Suitable for Residential and Commercial use To ensure that the current date and time settings are maintained and the set program is followed even during power failure Some appliances need to be controlled depending on the sunrise and sunset times.This can be done using astronomical time switch depending on the different times of a season.Geographical location is input via entering longitude and latitude There are four different options available for summer or winter switching of a program The offset setting enables the user to adjust the astronomical times up to + -2h.This helps in saving energy by turning on lighting later and off earlier than the previously set sunset and sunrise times depending on a particular geographical area In night break program can be turned off at night during the set time duration Time switches are used in residential,commercial and industrial premises to improve comfort and save energy by switching loads automatically as per real time.Havells offers a variety of time switches to precisely meet the requirements of different applications.The range offers several feature benefits such as different options of minimum switching time,internal battery to enable the timing function in case of power failure,daily and weekly versions,simple and compact design Astronomical Time Switch