Chapter 1: Getting Started    3  
Examination before Installation 
Every SG2 smart relay has been fully tested and examined before shipment. Please carry out the following 
examination procedures after unpacking your SG2 smart relay. 
• Check to see if the model number of the SG2 matches the model number that you ordered. 
• Check to see whether any damage occurred to the SG2 during shipment. Do not connect the SG2 smart relay to the 
power supply if there is any sign of damage. 
Contact 
  if you find any abnormal conditions as mentioned above. 
 
Environmental Precautions 
The installation site of the SG2 smart relay is very important. It relates directly to the functionality and the life 
span of your SG2. Please carefully choose an installation site that meets the following requirements: 
• Mount the unit vertically 
• Environment temperature: -4°F - 131°F (-20°C - 55°C) 
• Avoid placing SG2 close to any heating equipment 
• Avoid dripping water, condensation, or humid environment 
• Avoid direct sunlight 
• Avoid oil, grease, and gas 
• Avoid contact with corrosive gases and liquids 
• Prevent foreign dust, flecks, or metal scraps from contacting the SG2 smart relay 
• Avoid electric-magnetic interference (soldering or power machinery) 
• Avoid excessive vibration; if vibration cannot be avoided, an anti-rattle mounting device should be installed to 
reduce vibration. 
 
Disclaim of Liability 
We have reviewed the contents of this publication to ensure consistency with the hardware and software 
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the 
information in this publication is reviewed regularly and any necessary corrections are included in subsequent 
editions. 
 
SG2 Model Identification 
 
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