
| 1 | Speaker | Generates audio and buzzer tones. | 
| 2 | Indicator 1 | Orange: Charging | 
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 | Green: Charging complete | 
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 | Red: Battery pack error or the surrounding temperature is out of | 
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 | the charging temperature range. | 
| 3 | Indicator 2 | Flashes blue when operating via Bluetooth or orange when | 
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 | operating via  | 
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 | scanning error and lights green when a bar code scans | 
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 | successfully. | 
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 | Lights red when the alarm function is activated. | 
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 | Flashes magenta when the  | 
| 4 | Screen | The screen displays texts, operations, indicators and so forth. | 
| 5 | Cursor Key | Perform the same functions as the up, down, left and right arrow | 
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 | keys on a PC keyboard. | 
| 6 | Center Trigger Key | Used to perform bar code reading. | 
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 | Can be assigned an arbitrary function. | 
| 7 | Power Key | Turns the power on and off. | 
| 8 | R Key | Can be assigned an arbitrary function. | 
| 9 | L Key | Can be assigned an arbitrary function. | 
| 10 | Enter Key | Press when finishing entering numerical values or when moving | 
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 | to the next step. | 
| 11 | Numeric Keys | Used to enter numeric values and decimal points. | 
| 12 | Function Keys | F1: Similar function as the Alt key on a PC keyboard. | 
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 | F2: Similar function as the Shift+Tab keys combination on a PC | 
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 | keyboard. Used to move the cursor among entry or selection | 
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 | items. | 
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 | F3: Similar function as the Tab key on a PC keyboard. Used to | 
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 | move the cursor among entry or selection items. | 
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 | F4: Not assigned. | 
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 | F5: Enter a space. | 
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 | F6: Similar function as the cursor left key on a PC keyboard. | 
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 | F7: Similar function as the cursor right key on a PC keyboard. | 
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 | F8: Select text entry mode. | 
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 | (The mode changes in order of Numeric ➝ Uppercase letter ➝ | 
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 | Lowercase letter) | 
| 13 | Microphone | Used for audio input (including voice). | 
| 14 | Fn Key | Used to make various settings in combination with the numeric | 
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 | keys or when starting a  |