what is pwm

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If your Von Duprin EL (solenoid) device pulls and releases quickly instead of holding the latch retracted, please check all of the items below.In most cases, one or more of these solutions will r...
For Product Shipped Prior to August 2012 using the old (black) potted module:a.       0-100 ft 14 gauge wireb.      0-200 ft 12 gauge wire&nbs...
The new potted module ( PWM ) operates with a soft start, gradually increasing the input on time to the pull coil until it is on 100% of the time. This results in less noise when EL solenoid is pul...
  For Product Shipped Prior to August 2012 using the old (black) potted module: a.       0-100 ft 14 gauge wire b.      0-200 ft 12...