PLANAR MONOLITHIC INDUSTRIES, INC. MINIATURE 2 TO 18 GHz THRESHOLD DETECTORS, PMI MODEL No: TD-23T-SS-218 HAS AN INPUT OPERATING RANGE OF -18dBm TO -23dBm OVER THE FULL FREQENCY RANGE. THE THRESHOLD LEVEL IS INTERNALLY FIXED TO PROVIDE A MINIMUM SIGNAL LEVEL OF -23dBm. THE INPUT VSWR IS <2.5:1 AND THE RESPONSE TIME IS <100S. THE DEVICE USES A SINGLE +12vdc DC SUPPLY AND THE SIZE IS 1.00"" X 0.65"" X 0.40"".