● Long sensing distance (1.5 to 2 times longer sensing distance guaranteed compared to existing models) ● Advanced durability as comprehensive existing case and rear cap structure (Upgrade) ● Easy to check operation from various angles with 4-side LED (Upgrade) ● Shorten the time of maintenance ● Improved the noise resistance with dedicated IC ● Built-in surge protection, reverse polarity protection, overcurrent protection circuit ● Red LED operation indicator ● Protection structure IP67(IEC standard)