Glen Cove Controls Control SystsRegulators Whol 50 Glen St Intech 21, Inc. has pioneered a fully addressable token ring method for communication over power lines. This patented method can be utilized for numerous applications, using modular sensor interface components. Our systems utilize existing building/facility's power lines to interconnect processes and equipment into a local area network. Standard serial interfaces implemented over wired and wireless physical layers allow connecting of multiple systems into a wide area network. Glen Cove NY Controls Control SystsRegulators Whol Intech 21 Inc www.intech21.com intech 21 electrical heating energy conservation energy conservation green heating heat control engineering electric electricity submeter submetering master meter master meter eco-friendly electric submeter wireless building manag intech 21 electrical heating energy conservation energy conservation green heating heat control engineering electric electricity submeter submetering master meter master meter eco-friendly electric submeter wireless building manag Business Reviews Intech 21 Inc Testimonials