ios - interpreting BLE device using Swift -

hi have 1 ble device has ti cc2541 chip , sensors. want create own ios app using swift.

currently, using lightblue app, can see following services , characteristics:

1) device information 2) uuid: fff0

1. characteristics 1, properties: read, write, uuid: fff1
2. characteristics 2, properties: read, uuid: fff2
3. characteristics 3, properties: write, uuid: fff3
4. characteristics 4, properties: notify, uuid: fff4
5. characteristics 5, properties: read, uuid: fff5

3) uuid: ffe0

1. key press state a, properties write notify, uuid: ffe1
2. key press state b, properties write, uuid: ffe2
3. key press state c, properties write notify, uuid: ffe3

i figure out everytime press button on device, ffe1 (key press state a) returns 9-byte values, following:

<0e0a1f0f 271e000d 01> --> [2574, 3871, 7719, 11264, 1, 0, 0, 0, 0] <0e0a1f0f 271e002c 01> --> [2574, 3871, 7719, 3328, 1, 0, 0, 0, 0]

question: not able understand values? these value represents? appreciate feedback started.