Low frequency, top connection, 2-pin (Mil-C-5015) accelerometer Frequency : +- 5%: 30-120,000 cpm +-10%: 18-240,000 cpm +-3dB: 12-360,000 cpm Range : 1.5 kHz Mounted Resonant Frequency: 840kcpm Sensitivity (+-5%): 500 mV/g Measurement Range: +-10g Temp Range: -65 to +250 degrees F Weight: 7.4 oz/210g Dimensions (dia x ht): 1 3/16 x 2 3/16 Stud size: 1/4 -28 captive screw.