This part is a kind of semiconductor called AC188.

Function of this product has High Temperature Accelerometer.

Manufacturers : CTC

Image and pinout :

Some of the text within the PDF file :

High Temp AC188 Series High Temperature Accelerometer, M8 Captive Bolt Side Exit Connector / Cable, 100 mV/g 2 Pin Connector Connector Pin A B Polarity (+) Signal/Power (-) Common AC188-1A Armored Integral Cable Conductor Red Black Shield Polarity (+) Signal/Power (-) Common Cable Drain Wire AC188-5A HIGH TEMP Part Numbers & Ordering Information: AC188-1A High Temperature accelerometer, 100 mV/g, 2 pin side connector, with M8 captive bolt AC188-5A/010-Z AC188-5A/020-Z AC188-5A/030-Z AC188-5A/050-Z AC188-5A/100-Z AC188-5A/010-F AC188-5A/020-F AC188-5A/030-F AC188-5A/050-F AC188-5A/100-F 10 ft. (3 m), blunt cut end 20 ft. (6 m), blunt cut end 30 ft. (9 m), blunt cut end 50 ft. (15 m), blunt cut end 100 ft. (30 m), blunt cut end 10 ft. (3 m), BNC plug connector [ ... ]

AC188 PDF Datasheet Download