Function and features:

--The meter use type DEM073 single phase watt-hour meter as basal meter, and add an 
   impulse occurring device sampling by magnetoelectricity sensor. It has the following 
   function: adjust impulse width, LED impulse output indication, anti-dithering, wide 
   temperature working range (-40~80 ) high reliability and long life, can choose inner placed 
   current as power supply electrical source.
--Front board three holes fixed installation, the cover is made ABS engineering plastics 
   molded overall which has a transparent glass window, the base of the meter is made of 
   quality steel which is after double-through antirust processing, and the terminal block is 
   made of quality bakelite material which is moisture-resistant, fire-retardant, high 
   temperature molded overall. It has following features: Economy benefits, specious 
   appearance, etc.
--Standard configuration the meter adopt double jewel bearing, upper oriented bearing is 
   made of lubrication graphite bush and stainless steel needle. It has following features: 
   Long-life and minimal friction, etc. May select magnetic thrust bearing (Product 
   Configuration code is TD)
--Standard configuration 6 digits display by drum wheel mechanical counter, may select 5 
   digits display by drum wheel mechanical counter (Product Configuration code is TG).
--Standard configuration without anti-reverse device, may select add anti-reverse function. 
   (Please specified when ordering).
--Standard configuration one port of pulse output active (polarity) May select increase a 
   distant port of pulse output passive (no polarity), contact with all kind of AMR system 
   conveniently, complying with standard IEC 62053-31.
--LED instructions signal of power impulse (red).
--Single component measure single phase two wire active energy consumption. Complying
   with standard IEC 62053-11.
--Direct connect operation, there are two types you may select. Standard configuration type 
   1B wiring, may select type 1A wiring (Product Configuration code is TK).
--Standard configuration short terminal cover, may select extended terminal cover, it is for 
   protecting use electrical safety. (Product Configuration code is UJ).

DEM121TJ single phase impulse electromechanical Front board Installed Active Energy Meter Technical parameters:

DEM121TJ single phase impulse electromechanical Front board Installed Active Energy Meter Outer and mount dimension:

DEM121TJ single phase impulse electromechanical Front board Installed Active Energy Meter  Wiring diagram(Type 1B)