The Hi-Wattage model is standard. The wattage for the 1M is 20 watts and the 2M is 30 watts. Both the 1M and 2M are available with cooling fins attached to their cases. The finned model wattage's are75 watts for the 1M and 125 watts for the 2M. The wattage's stated are based on heavy current connections with unconfined mounting. The case temperatures should not exceed 140 degrees F(60 degrees C). Additionally the Finned Models require 100 cubic feet(2.8 cubicmeters) per minute air flow over their cases. The ambient temperature should not exceed 86 degree F(30 degrees C). Operation above this temperature the wattage rating should be derated accordingly.
When ordering specify model number, wattage, output connector and tolerance.
Example: 1M-20, 20 watts,BNC, 4%.