Choosing the right signaling indicators and operator controls comes down to how many statuses you need to show and how much wiring you want to do. On one side, a simple 120V green pilot light; on the other, a five-tier USB tower with a buzzer. Here is how to decide before you buy.
Quick Verdict
If you need a straightforward panel-mounted indicator for a 120V circuit and you are comfortable with used industrial gear, the Schneider Electric 9001KP35LGG31 gets the job done at a much lower price. If you need multi-color status plus an audible alert without hardwiring, the 5-Stack USB LED Andon Tower Signal Light is the more complete solution.
At a Glance
| Product | Price | Signal Type | Power | Mounting | Condition |
|---|---|---|---|---|---|
| Schneider Electric 9001KP35LGG31 30mm 120V~ Green Standard Pilot Light | USD 45.99 | Single green pilot light | 120V AC | Panel mount | Used |
| 5-Stack USB LED Andon Tower Signal Light indicator Buzzer 5VDC Industrial Warn | USD 177.99 | 5-tier LED (red, yellow, green, blue, white) with 85dB buzzer | 5VDC USB | Adjustable bracket | New |
Where Each Product Wins
The Schneider pilot light wins for a single, clearly visible green status indication on a 120V panel with screw-terminal connections. It is simpler, smaller, and $132 less than the tower.
The Andon tower wins when you need five colors, a loud buzzer, and USB-powered setup that avoids high-voltage relay wiring. The adjustable bracket and 5VDC USB cable make it easy to place at a workstation or CNC machine.
Product Notes
Schneider Electric 9001KP35LGG31 30mm 120V~ Green Standard Pilot Light
If all you need is a green lens indicator on a 120V AC panel, this used pilot light is a direct way to get one. Screw terminals keep the wiring familiar, and the 30mm panel-mount body is designed for industrial control panels. Each unit was individually powered and confirmed to illuminate before shipping, and the quantity you select is the quantity sent. Because it is used, expect minor marks, discoloration, or signs of earlier installation. Its single green lens shows only one status, and there is no buzzer or stacked colors. It earns its place in straightforward operator control panels where a simple illuminated confirmation is enough.
5-Stack USB LED Andon Tower Signal Light indicator Buzzer 5VDC Industrial Warn
The five-tier tower stacks red, yellow, green, blue, and white LEDs into one unit and adds an 85dB buzzer, making it a complete status station for assembly lines, workstations, and CNC alerts. Power comes from a standard 9-foot USB cable at 5VDC, so it is plug-and-play and keeps you away from high-voltage relay wiring. The adjustable bracket helps position it where operators can actually see it. The main trade-off is the $177.99 price, which sits $132 above the Schneider pilot light. It also comes with a California Prop 65 warning about cancer and reproductive harm, so review that warning if it matters for your facility. Choose this when you need audible and visual alerts across multiple machine states.
Final Choice by Use Case
For a single 120V green status indication on a panel, choose the Schneider Electric 9001KP35LGG31.
For multi-color status, an audible buzzer, and a USB-powered setup, choose the 5-Stack USB LED Andon Tower Signal Light.
