Communication data format of the USB product
Developers can use the programming format below to control the LED USB Tower light via PC. For detailed programing information, please see the reference code that is provided separately
| No. | TYPE | ABB | DESCRIPT | Size(Byte) |
| 1 | DEVICE INFORMATION | VID | VENDOR ID : 0x04D8(Provided by IC manufacturer) | 2 |
| 2 | PID | PRODUCT ID: 0xE73C(QLIGHT ID) | 2 | |
| 3 | INDEX |
1. Maximum of 4 USB tower lights can be installed per PC. 2. Field value helps to distinguish each USB tower light. 3. Reference - USB0 : 0×4970/ USB1 : 0×4971/ USB2 : 0×4972/ usb3 : 0×4973 4. Assign 0-3 for convenient use in IBM PC environment. |
2 | |
| 1 | DATA | Write | 1. Send ‘W=0x57’ which means transferring the data from PC to USB. | 1 |
| 2 | Sound Group |
1. Field for sound pattern designation. 0 : WS/ 1 : WP/ 2 : WM/ 3 : WA/ 4 : WB/ 5 : BZ/ 6 : WM(8)/ 7 : WA(8) 2. Total 8 groups are provided and each group has channel 1 to 5. |
1 | |
| 3 | R LAMP |
1. Field for controlling Red lamp. 2. Reference - 0 : LAMP OFF/ 1 : LAMP BLINK(ON/OFF)/ 2 : LAMP ON/ Else : Don’t care |
1 | |
| 4 | A LAMP |
1. Field for controlling Amber lamp. 2. Reference - 0 : LAMP OFF/ 1 : LAMP BLINK(ON/OFF)/ 2 : LAMP ON/ Else : Don’t care |
1 | |
| 5 | G LAMP |
1. Field for controlling Green lamp. 2. Reference - 0 : LAMP OFF/ 1 : LAMP BLINK(ON/OFF)/ 2 : LAMP ON/ Else : Don’t care |
1 | |
| 6 | B LAMP |
1. Field for controlling Blue lamp. 2. Reference - 0 : LAMP OFF/ 1 : LAMP BLINK(ON/OFF)/ 2 : LAMP ON/ Else : Don’t care |
1 | |
| 7 | W LAMP |
1. Field for controlling White lamp. 2. Reference - 0 : LAMP OFF/ 1 : LAMP BLINK(ON/OFF)/ 2 : LAMP ON/ Else : Don’t care |
1 |
| Category | Specification | Category | Specification |
| Tower light |
·Layers(Layer): 1-5 ·Voltage(Voltage): DC12V ·Current(Current): 0.300A ·Color(Color): |
Cable |
1. VCC (Red) 2. D- (White) 3. D+ (Green) 4. GND (Black) 5. Shield |
| Speaker |
·Speaker Rated(Rated): 1W ·Volume(Volume): Max. 85dB at 1m |
Buzzer |
·Voltage(Voltage): DC12V ·Current(Current): 20mA ·Volume(Volume): Max. 90dB at 1m |
| USB standard |
·Available on hosts that support USB 1.1 or higher ·5V/500mA rated (uses 2 USB port) |
Input voltage | USB DC 5V×2PORT (Built-in 5V To 12V converter) |
R-Red 
B-Blue
W-White
- The power consumption of a USB Tower light(3 layers type) is only about 2.5W.
- The USB specification is 5VDC/(300mA/500mA) per PC port which equals approximately 1.5W. Thus, using two ports will supply the proper power to the product.
- It is possible to use multiple colors at the same time by using the USB power supply, but using one lamp and one alarm sound at a time is recommended.
- There are two types of USB connections as shown in the image below; a standard USB connector and a USB power connector with a power line connected in parallel.
| Pin | Name | WIRE Color | Description |
| 1 | VCC | RED | +5V |
| 2 | D- | WHITE | Data- |
| 3 | D+ | GREEN | Data+ |
| 4 | GND | BLACK | Ground |
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