ONN-M4B-USB-B RYG Signal Tower Light Tri-color Single Layer Dome Design 5V DC Indicator Lamp
Product Overview
ONN-M4B-USB-B is innovative USB serial port controlled mini hemispheric three-color indicator light. Powered and controlled by standard DC5V USB interface, connect PC directly to send hexadecimal code to independently switch steady/flashing light and buzzer status. M30 standard thread nut for quick panel installation, double-layer frosted PC lens deliver soft uniform 360° glow. Silent version reaches IP65 splashproof, optional over 85dB loud buzzer for sound-light alarm. Widely applied to inspection testing machine, SMT equipment, self-service cash register, automated detection station.
Quick Detail
- Control Mode: DC5V USB power supply + serial port hex code control
- Material: ABS lamp body, double soft frosted PC light cover
- IP Grade: IP65 (buzzer-free version)
- Buzzer: Optional, volume ≥85dB intermittent alarm
- Control Logic: Each R/Y/G light & buzzer controlled separately via hex code, flash frequency 1Hz
- Serial Parameter: Baud rate 9600, 8 data bits, 1 stop bit, no parity
- Certifications: CE, RoHS
- Warranty: Global 2-year after-sales support
Specifications
| Spec Item |
Details |
| Model |
ONN-M4B-USB-B |
| Power |
DC5V USB control |
| Mount |
M30*P1.5 thread nut |
| Lens |
Double soft frosted PC |
| IP Grade |
IP65 (silent version) |
| Buzzer |
Optional >85dB |
| Control |
Independent steady / flash via hex code |
| Warranty |
2 Years |
USB Operation Instruction

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