The ECX-P27BN-1244.000 from ECS Inc. International is a General Crystal Oscillator with Frequency 1244 MHz, Supply Voltage 2.5 V, Current 68 mA, Frequency Stability ±50 ppm, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for ECX-P27BN-1244.000 can be seen below.